diff --git a/fixtures/dom/src/components/Header.js b/fixtures/dom/src/components/Header.js
index 7bcbe86b46f30..508fb7d2eb5d4 100644
--- a/fixtures/dom/src/components/Header.js
+++ b/fixtures/dom/src/components/Header.js
@@ -62,6 +62,7 @@ class Header extends React.Component {
                 <option value="/date-inputs">Date Inputs</option>
                 <option value="/error-handling">Error Handling</option>
                 <option value="/event-pooling">Event Pooling</option>
+                <option value="/custom-elements">Custom Elements</option>
               </select>
             </label>
             <label htmlFor="react_version">
diff --git a/fixtures/dom/src/components/fixtures/custom-elements/index.js b/fixtures/dom/src/components/fixtures/custom-elements/index.js
new file mode 100644
index 0000000000000..d0bd747514186
--- /dev/null
+++ b/fixtures/dom/src/components/fixtures/custom-elements/index.js
@@ -0,0 +1,47 @@
+import FixtureSet from '../../FixtureSet';
+import TestCase from '../../TestCase';
+
+const React = window.React;
+const ReactDOM = window.ReactDOM;
+
+class HelloWorld extends React.Component {
+  render() {
+    return <h1>Hello, world!</h1>;
+  }
+}
+
+// Babel breaks web components.
+// https://github.com/w3c/webcomponents/issues/587
+// eslint-disable-next-line no-new-func
+const MyElement = new Function(
+  'React',
+  'ReactDOM',
+  'HelloWorld',
+  `
+return class MyElement extends HTMLElement {
+  constructor() {
+    super();
+    const shadowRoot = this.attachShadow({ mode:'open' });
+    ReactDOM.render(React.createElement(HelloWorld), shadowRoot);
+  }
+}`
+)(React, ReactDOM, HelloWorld);
+
+customElements.define('my-element', MyElement);
+
+export default class ButtonTestCases extends React.Component {
+  render() {
+    return (
+      <FixtureSet
+        title="Custom Elements"
+        description="Support for Custom Element DOM standards.">
+        <TestCase title="Rendering into shadow root">
+          <TestCase.ExpectedResult>
+            You should see "Hello, World" printed below.{' '}
+          </TestCase.ExpectedResult>
+          <my-element />
+        </TestCase>
+      </FixtureSet>
+    );
+  }
+}
diff --git a/fixtures/dom/src/components/fixtures/index.js b/fixtures/dom/src/components/fixtures/index.js
index c28f6b4f1ef57..69f09696fe2ed 100644
--- a/fixtures/dom/src/components/fixtures/index.js
+++ b/fixtures/dom/src/components/fixtures/index.js
@@ -9,6 +9,7 @@ import ButtonFixtures from './buttons';
 import DateInputFixtures from './date-inputs';
 import ErrorHandling from './error-handling';
 import EventPooling from './event-pooling';
+import CustomElementFixtures from './custom-elements';
 
 const React = window.React;
 
@@ -40,6 +41,8 @@ function FixturesPage() {
       return <ErrorHandling />;
     case '/event-pooling':
       return <EventPooling />;
+    case '/custom-elements':
+      return <CustomElementFixtures />;
     default:
       return <p>Please select a test fixture.</p>;
   }
diff --git a/src/__mocks__/vendor/third_party/WebComponents.js b/src/__mocks__/vendor/third_party/WebComponents.js
deleted file mode 100755
index 75431842f8104..0000000000000
--- a/src/__mocks__/vendor/third_party/WebComponents.js
+++ /dev/null
@@ -1,6379 +0,0 @@
-/**
- * @license
- * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
- * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
- * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
- * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
- * Code distributed by Google as part of the polymer project is also
- * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
- * @providesModule WebComponents
- */
-// @version 0.5.1
-window.WebComponents = window.WebComponents || {};
-
-(function(scope) {
-  var flags = scope.flags || {};
-  var file = "webcomponents.js";
-  var script = document.querySelector('script[src*="' + file + '"]');
-  var flags = {};
-  if (!flags.noOpts) {
-    location.search.slice(1).split("&").forEach(function(o) {
-      o = o.split("=");
-      o[0] && (flags[o[0]] = o[1] || true);
-    });
-    if (script) {
-      for (var i = 0, a; a = script.attributes[i]; i++) {
-        if (a.name !== "src") {
-          flags[a.name] = a.value || true;
-        }
-      }
-    }
-    if (flags.log) {
-      var parts = flags.log.split(",");
-      flags.log = {};
-      parts.forEach(function(f) {
-        flags.log[f] = true;
-      });
-    } else {
-      flags.log = {};
-    }
-  }
-  flags.shadow = flags.shadow || flags.shadowdom || flags.polyfill;
-  if (flags.shadow === "native") {
-    flags.shadow = false;
-  } else {
-    flags.shadow = flags.shadow || !HTMLElement.prototype.createShadowRoot;
-  }
-  if (flags.register) {
-    window.CustomElements = window.CustomElements || {
-      flags: {}
-    };
-    window.CustomElements.flags.register = flags.register;
-  }
-  scope.flags = flags;
-})(WebComponents);
-
-if (WebComponents.flags.shadow) {
-  if (typeof WeakMap === "undefined") {
-    (function() {
-      var defineProperty = Object.defineProperty;
-      var counter = Date.now() % 1e9;
-      var WeakMap = function() {
-        this.name = "__st" + (Math.random() * 1e9 >>> 0) + (counter++ + "__");
-      };
-      WeakMap.prototype = {
-        set: function(key, value) {
-          var entry = key[this.name];
-          if (entry && entry[0] === key) entry[1] = value; else defineProperty(key, this.name, {
-            value: [ key, value ],
-            writable: true
-          });
-          return this;
-        },
-        get: function(key) {
-          var entry;
-          return (entry = key[this.name]) && entry[0] === key ? entry[1] : undefined;
-        },
-        "delete": function(key) {
-          var entry = key[this.name];
-          if (!entry || entry[0] !== key) return false;
-          entry[0] = entry[1] = undefined;
-          return true;
-        },
-        has: function(key) {
-          var entry = key[this.name];
-          if (!entry) return false;
-          return entry[0] === key;
-        }
-      };
-      window.WeakMap = WeakMap;
-    })();
-  }
-  window.ShadowDOMPolyfill = {};
-  (function(scope) {
-    "use strict";
-    var constructorTable = new WeakMap();
-    var nativePrototypeTable = new WeakMap();
-    var wrappers = Object.create(null);
-    function detectEval() {
-      if (typeof chrome !== "undefined" && chrome.app && chrome.app.runtime) {
-        return false;
-      }
-      if (navigator.getDeviceStorage) {
-        return false;
-      }
-      try {
-        var f = new Function("return true;");
-        return f();
-      } catch (ex) {
-        return false;
-      }
-    }
-    var hasEval = detectEval();
-    function assert(b) {
-      if (!b) throw new Error("Assertion failed");
-    }
-    var defineProperty = Object.defineProperty;
-    var getOwnPropertyNames = Object.getOwnPropertyNames;
-    var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
-    function mixin(to, from) {
-      var names = getOwnPropertyNames(from);
-      for (var i = 0; i < names.length; i++) {
-        var name = names[i];
-        defineProperty(to, name, getOwnPropertyDescriptor(from, name));
-      }
-      return to;
-    }
-    function mixinStatics(to, from) {
-      var names = getOwnPropertyNames(from);
-      for (var i = 0; i < names.length; i++) {
-        var name = names[i];
-        switch (name) {
-         case "arguments":
-         case "caller":
-         case "length":
-         case "name":
-         case "prototype":
-         case "toString":
-          continue;
-        }
-        defineProperty(to, name, getOwnPropertyDescriptor(from, name));
-      }
-      return to;
-    }
-    function oneOf(object, propertyNames) {
-      for (var i = 0; i < propertyNames.length; i++) {
-        if (propertyNames[i] in object) return propertyNames[i];
-      }
-    }
-    var nonEnumerableDataDescriptor = {
-      value: undefined,
-      configurable: true,
-      enumerable: false,
-      writable: true
-    };
-    function defineNonEnumerableDataProperty(object, name, value) {
-      nonEnumerableDataDescriptor.value = value;
-      defineProperty(object, name, nonEnumerableDataDescriptor);
-    }
-    getOwnPropertyNames(window);
-    function getWrapperConstructor(node) {
-      var nativePrototype = node.__proto__ || Object.getPrototypeOf(node);
-      var wrapperConstructor = constructorTable.get(nativePrototype);
-      if (wrapperConstructor) return wrapperConstructor;
-      var parentWrapperConstructor = getWrapperConstructor(nativePrototype);
-      var GeneratedWrapper = createWrapperConstructor(parentWrapperConstructor);
-      registerInternal(nativePrototype, GeneratedWrapper, node);
-      return GeneratedWrapper;
-    }
-    function addForwardingProperties(nativePrototype, wrapperPrototype) {
-      installProperty(nativePrototype, wrapperPrototype, true);
-    }
-    function registerInstanceProperties(wrapperPrototype, instanceObject) {
-      installProperty(instanceObject, wrapperPrototype, false);
-    }
-    var isFirefox = /Firefox/.test(navigator.userAgent);
-    var dummyDescriptor = {
-      get: function() {},
-      set: function(v) {},
-      configurable: true,
-      enumerable: true
-    };
-    function isEventHandlerName(name) {
-      return /^on[a-z]+$/.test(name);
-    }
-    function isIdentifierName(name) {
-      return /^\w[a-zA-Z_0-9]*$/.test(name);
-    }
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-      };
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-        return this.__impl4cf1e782hg__[name].apply(this.__impl4cf1e782hg__, arguments);
-      };
-    }
-    function getDescriptor(source, name) {
-      try {
-        return Object.getOwnPropertyDescriptor(source, name);
-      } catch (ex) {
-        return dummyDescriptor;
-      }
-    }
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-      var descr = Object.getOwnPropertyDescriptor(Node.prototype, "nodeType");
-      return descr && !descr.get && !descr.set;
-    }();
-    function installProperty(source, target, allowMethod, opt_blacklist) {
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-        if (isFirefox) {
-          source.__lookupGetter__(name);
-        }
-        var descriptor = getDescriptor(source, name);
-        var getter, setter;
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-          continue;
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-        var isEvent = isEventHandlerName(name);
-        if (isEvent) getter = scope.getEventHandlerGetter(name); else getter = getGetter(name);
-        if (descriptor.writable || descriptor.set || isBrokenSafari) {
-          if (isEvent) setter = scope.getEventHandlerSetter(name); else setter = getSetter(name);
-        }
-        defineProperty(target, name, {
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-          set: setter,
-          configurable: descriptor.configurable,
-          enumerable: descriptor.enumerable
-        });
-      }
-    }
-    function register(nativeConstructor, wrapperConstructor, opt_instance) {
-      var nativePrototype = nativeConstructor.prototype;
-      registerInternal(nativePrototype, wrapperConstructor, opt_instance);
-      mixinStatics(wrapperConstructor, nativeConstructor);
-    }
-    function registerInternal(nativePrototype, wrapperConstructor, opt_instance) {
-      var wrapperPrototype = wrapperConstructor.prototype;
-      assert(constructorTable.get(nativePrototype) === undefined);
-      constructorTable.set(nativePrototype, wrapperConstructor);
-      nativePrototypeTable.set(wrapperPrototype, nativePrototype);
-      addForwardingProperties(nativePrototype, wrapperPrototype);
-      if (opt_instance) registerInstanceProperties(wrapperPrototype, opt_instance);
-      defineNonEnumerableDataProperty(wrapperPrototype, "constructor", wrapperConstructor);
-      wrapperConstructor.prototype = wrapperPrototype;
-    }
-    function isWrapperFor(wrapperConstructor, nativeConstructor) {
-      return constructorTable.get(nativeConstructor.prototype) === wrapperConstructor;
-    }
-    function registerObject(object) {
-      var nativePrototype = Object.getPrototypeOf(object);
-      var superWrapperConstructor = getWrapperConstructor(nativePrototype);
-      var GeneratedWrapper = createWrapperConstructor(superWrapperConstructor);
-      registerInternal(nativePrototype, GeneratedWrapper, object);
-      return GeneratedWrapper;
-    }
-    function createWrapperConstructor(superWrapperConstructor) {
-      function GeneratedWrapper(node) {
-        superWrapperConstructor.call(this, node);
-      }
-      var p = Object.create(superWrapperConstructor.prototype);
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-      GeneratedWrapper.prototype = p;
-      return GeneratedWrapper;
-    }
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-    }
-    function isNative(object) {
-      return !isWrapper(object);
-    }
-    function wrap(impl) {
-      if (impl === null) return null;
-      assert(isNative(impl));
-      return impl.__wrapper8e3dd93a60__ || (impl.__wrapper8e3dd93a60__ = new (getWrapperConstructor(impl))(impl));
-    }
-    function unwrap(wrapper) {
-      if (wrapper === null) return null;
-      assert(isWrapper(wrapper));
-      return wrapper.__impl4cf1e782hg__;
-    }
-    function unsafeUnwrap(wrapper) {
-      return wrapper.__impl4cf1e782hg__;
-    }
-    function setWrapper(impl, wrapper) {
-      wrapper.__impl4cf1e782hg__ = impl;
-      impl.__wrapper8e3dd93a60__ = wrapper;
-    }
-    function unwrapIfNeeded(object) {
-      return object && isWrapper(object) ? unwrap(object) : object;
-    }
-    function wrapIfNeeded(object) {
-      return object && !isWrapper(object) ? wrap(object) : object;
-    }
-    function rewrap(node, wrapper) {
-      if (wrapper === null) return;
-      assert(isNative(node));
-      assert(wrapper === undefined || isWrapper(wrapper));
-      node.__wrapper8e3dd93a60__ = wrapper;
-    }
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-      get: undefined,
-      configurable: true,
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-      getterDescriptor.get = getter;
-      defineProperty(constructor.prototype, name, getterDescriptor);
-    }
-    function defineWrapGetter(constructor, name) {
-      defineGetter(constructor, name, function() {
-        return wrap(this.__impl4cf1e782hg__[name]);
-      });
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-    function forwardMethodsToWrapper(constructors, names) {
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-          constructor.prototype[name] = function() {
-            var w = wrapIfNeeded(this);
-            return w[name].apply(w, arguments);
-          };
-        });
-      });
-    }
-    scope.assert = assert;
-    scope.constructorTable = constructorTable;
-    scope.defineGetter = defineGetter;
-    scope.defineWrapGetter = defineWrapGetter;
-    scope.forwardMethodsToWrapper = forwardMethodsToWrapper;
-    scope.isWrapper = isWrapper;
-    scope.isWrapperFor = isWrapperFor;
-    scope.mixin = mixin;
-    scope.nativePrototypeTable = nativePrototypeTable;
-    scope.oneOf = oneOf;
-    scope.registerObject = registerObject;
-    scope.registerWrapper = register;
-    scope.rewrap = rewrap;
-    scope.setWrapper = setWrapper;
-    scope.unsafeUnwrap = unsafeUnwrap;
-    scope.unwrap = unwrap;
-    scope.unwrapIfNeeded = unwrapIfNeeded;
-    scope.wrap = wrap;
-    scope.wrapIfNeeded = wrapIfNeeded;
-    scope.wrappers = wrappers;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    function newSplice(index, removed, addedCount) {
-      return {
-        index: index,
-        removed: removed,
-        addedCount: addedCount
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-    }
-    var EDIT_LEAVE = 0;
-    var EDIT_UPDATE = 1;
-    var EDIT_ADD = 2;
-    var EDIT_DELETE = 3;
-    function ArraySplice() {}
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-        var rowCount = oldEnd - oldStart + 1;
-        var columnCount = currentEnd - currentStart + 1;
-        var distances = new Array(rowCount);
-        for (var i = 0; i < rowCount; i++) {
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-        for (var i = 1; i < rowCount; i++) {
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-          var min;
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-          } else {
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-        var prefixCount = 0;
-        var suffixCount = 0;
-        var minLength = Math.min(currentEnd - currentStart, oldEnd - oldStart);
-        if (currentStart == 0 && oldStart == 0) prefixCount = this.sharedPrefix(current, old, minLength);
-        if (currentEnd == current.length && oldEnd == old.length) suffixCount = this.sharedSuffix(current, old, minLength - prefixCount);
-        currentStart += prefixCount;
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-        var ops = this.spliceOperationsFromEditDistances(this.calcEditDistances(current, currentStart, currentEnd, old, oldStart, oldEnd));
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-          if (queue.length) {
-            mo.callback_(queue, mo);
-          }
-        }
-      }
-    }
-    function MutationRecord(type, target) {
-      this.type = type;
-      this.target = target;
-      this.addedNodes = new wrappers.NodeList();
-      this.removedNodes = new wrappers.NodeList();
-      this.previousSibling = null;
-      this.nextSibling = null;
-      this.attributeName = null;
-      this.attributeNamespace = null;
-      this.oldValue = null;
-    }
-    function registerTransientObservers(ancestor, node) {
-      for (;ancestor; ancestor = ancestor.parentNode) {
-        var registrations = registrationsTable.get(ancestor);
-        if (!registrations) continue;
-        for (var i = 0; i < registrations.length; i++) {
-          var registration = registrations[i];
-          if (registration.options.subtree) registration.addTransientObserver(node);
-        }
-      }
-    }
-    function removeTransientObserversFor(observer) {
-      for (var i = 0; i < observer.nodes_.length; i++) {
-        var node = observer.nodes_[i];
-        var registrations = registrationsTable.get(node);
-        if (!registrations) return;
-        for (var j = 0; j < registrations.length; j++) {
-          var registration = registrations[j];
-          if (registration.observer === observer) registration.removeTransientObservers();
-        }
-      }
-    }
-    function enqueueMutation(target, type, data) {
-      var interestedObservers = Object.create(null);
-      var associatedStrings = Object.create(null);
-      for (var node = target; node; node = node.parentNode) {
-        var registrations = registrationsTable.get(node);
-        if (!registrations) continue;
-        for (var j = 0; j < registrations.length; j++) {
-          var registration = registrations[j];
-          var options = registration.options;
-          if (node !== target && !options.subtree) continue;
-          if (type === "attributes" && !options.attributes) continue;
-          if (type === "attributes" && options.attributeFilter && (data.namespace !== null || options.attributeFilter.indexOf(data.name) === -1)) {
-            continue;
-          }
-          if (type === "characterData" && !options.characterData) continue;
-          if (type === "childList" && !options.childList) continue;
-          var observer = registration.observer;
-          interestedObservers[observer.uid_] = observer;
-          if (type === "attributes" && options.attributeOldValue || type === "characterData" && options.characterDataOldValue) {
-            associatedStrings[observer.uid_] = data.oldValue;
-          }
-        }
-      }
-      for (var uid in interestedObservers) {
-        var observer = interestedObservers[uid];
-        var record = new MutationRecord(type, target);
-        if ("name" in data && "namespace" in data) {
-          record.attributeName = data.name;
-          record.attributeNamespace = data.namespace;
-        }
-        if (data.addedNodes) record.addedNodes = data.addedNodes;
-        if (data.removedNodes) record.removedNodes = data.removedNodes;
-        if (data.previousSibling) record.previousSibling = data.previousSibling;
-        if (data.nextSibling) record.nextSibling = data.nextSibling;
-        if (associatedStrings[uid] !== undefined) record.oldValue = associatedStrings[uid];
-        scheduleCallback(observer);
-        observer.records_.push(record);
-      }
-    }
-    var slice = Array.prototype.slice;
-    function MutationObserverOptions(options) {
-      this.childList = !!options.childList;
-      this.subtree = !!options.subtree;
-      if (!("attributes" in options) && ("attributeOldValue" in options || "attributeFilter" in options)) {
-        this.attributes = true;
-      } else {
-        this.attributes = !!options.attributes;
-      }
-      if ("characterDataOldValue" in options && !("characterData" in options)) this.characterData = true; else this.characterData = !!options.characterData;
-      if (!this.attributes && (options.attributeOldValue || "attributeFilter" in options) || !this.characterData && options.characterDataOldValue) {
-        throw new TypeError();
-      }
-      this.characterData = !!options.characterData;
-      this.attributeOldValue = !!options.attributeOldValue;
-      this.characterDataOldValue = !!options.characterDataOldValue;
-      if ("attributeFilter" in options) {
-        if (options.attributeFilter == null || typeof options.attributeFilter !== "object") {
-          throw new TypeError();
-        }
-        this.attributeFilter = slice.call(options.attributeFilter);
-      } else {
-        this.attributeFilter = null;
-      }
-    }
-    var uidCounter = 0;
-    function MutationObserver(callback) {
-      this.callback_ = callback;
-      this.nodes_ = [];
-      this.records_ = [];
-      this.uid_ = ++uidCounter;
-      this.scheduled_ = false;
-    }
-    MutationObserver.prototype = {
-      constructor: MutationObserver,
-      observe: function(target, options) {
-        target = wrapIfNeeded(target);
-        var newOptions = new MutationObserverOptions(options);
-        var registration;
-        var registrations = registrationsTable.get(target);
-        if (!registrations) registrationsTable.set(target, registrations = []);
-        for (var i = 0; i < registrations.length; i++) {
-          if (registrations[i].observer === this) {
-            registration = registrations[i];
-            registration.removeTransientObservers();
-            registration.options = newOptions;
-          }
-        }
-        if (!registration) {
-          registration = new Registration(this, target, newOptions);
-          registrations.push(registration);
-          this.nodes_.push(target);
-        }
-      },
-      disconnect: function() {
-        this.nodes_.forEach(function(node) {
-          var registrations = registrationsTable.get(node);
-          for (var i = 0; i < registrations.length; i++) {
-            var registration = registrations[i];
-            if (registration.observer === this) {
-              registrations.splice(i, 1);
-              break;
-            }
-          }
-        }, this);
-        this.records_ = [];
-      },
-      takeRecords: function() {
-        var copyOfRecords = this.records_;
-        this.records_ = [];
-        return copyOfRecords;
-      }
-    };
-    function Registration(observer, target, options) {
-      this.observer = observer;
-      this.target = target;
-      this.options = options;
-      this.transientObservedNodes = [];
-    }
-    Registration.prototype = {
-      addTransientObserver: function(node) {
-        if (node === this.target) return;
-        scheduleCallback(this.observer);
-        this.transientObservedNodes.push(node);
-        var registrations = registrationsTable.get(node);
-        if (!registrations) registrationsTable.set(node, registrations = []);
-        registrations.push(this);
-      },
-      removeTransientObservers: function() {
-        var transientObservedNodes = this.transientObservedNodes;
-        this.transientObservedNodes = [];
-        for (var i = 0; i < transientObservedNodes.length; i++) {
-          var node = transientObservedNodes[i];
-          var registrations = registrationsTable.get(node);
-          for (var j = 0; j < registrations.length; j++) {
-            if (registrations[j] === this) {
-              registrations.splice(j, 1);
-              break;
-            }
-          }
-        }
-      }
-    };
-    scope.enqueueMutation = enqueueMutation;
-    scope.registerTransientObservers = registerTransientObservers;
-    scope.wrappers.MutationObserver = MutationObserver;
-    scope.wrappers.MutationRecord = MutationRecord;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    function TreeScope(root, parent) {
-      this.root = root;
-      this.parent = parent;
-    }
-    TreeScope.prototype = {
-      get renderer() {
-        if (this.root instanceof scope.wrappers.ShadowRoot) {
-          return scope.getRendererForHost(this.root.host);
-        }
-        return null;
-      },
-      contains: function(treeScope) {
-        for (;treeScope; treeScope = treeScope.parent) {
-          if (treeScope === this) return true;
-        }
-        return false;
-      }
-    };
-    function setTreeScope(node, treeScope) {
-      if (node.treeScope_ !== treeScope) {
-        node.treeScope_ = treeScope;
-        for (var sr = node.shadowRoot; sr; sr = sr.olderShadowRoot) {
-          sr.treeScope_.parent = treeScope;
-        }
-        for (var child = node.firstChild; child; child = child.nextSibling) {
-          setTreeScope(child, treeScope);
-        }
-      }
-    }
-    function getTreeScope(node) {
-      if (node instanceof scope.wrappers.Window) {
-        debugger;
-      }
-      if (node.treeScope_) return node.treeScope_;
-      var parent = node.parentNode;
-      var treeScope;
-      if (parent) treeScope = getTreeScope(parent); else treeScope = new TreeScope(node, null);
-      return node.treeScope_ = treeScope;
-    }
-    scope.TreeScope = TreeScope;
-    scope.getTreeScope = getTreeScope;
-    scope.setTreeScope = setTreeScope;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
-    var getTreeScope = scope.getTreeScope;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var setWrapper = scope.setWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var wrappers = scope.wrappers;
-    var wrappedFuns = new WeakMap();
-    var listenersTable = new WeakMap();
-    var handledEventsTable = new WeakMap();
-    var currentlyDispatchingEvents = new WeakMap();
-    var targetTable = new WeakMap();
-    var currentTargetTable = new WeakMap();
-    var relatedTargetTable = new WeakMap();
-    var eventPhaseTable = new WeakMap();
-    var stopPropagationTable = new WeakMap();
-    var stopImmediatePropagationTable = new WeakMap();
-    var eventHandlersTable = new WeakMap();
-    var eventPathTable = new WeakMap();
-    function isShadowRoot(node) {
-      return node instanceof wrappers.ShadowRoot;
-    }
-    function rootOfNode(node) {
-      return getTreeScope(node).root;
-    }
-    function getEventPath(node, event) {
-      var path = [];
-      var current = node;
-      path.push(current);
-      while (current) {
-        var destinationInsertionPoints = getDestinationInsertionPoints(current);
-        if (destinationInsertionPoints && destinationInsertionPoints.length > 0) {
-          for (var i = 0; i < destinationInsertionPoints.length; i++) {
-            var insertionPoint = destinationInsertionPoints[i];
-            if (isShadowInsertionPoint(insertionPoint)) {
-              var shadowRoot = rootOfNode(insertionPoint);
-              var olderShadowRoot = shadowRoot.olderShadowRoot;
-              if (olderShadowRoot) path.push(olderShadowRoot);
-            }
-            path.push(insertionPoint);
-          }
-          current = destinationInsertionPoints[destinationInsertionPoints.length - 1];
-        } else {
-          if (isShadowRoot(current)) {
-            if (inSameTree(node, current) && eventMustBeStopped(event)) {
-              break;
-            }
-            current = current.host;
-            path.push(current);
-          } else {
-            current = current.parentNode;
-            if (current) path.push(current);
-          }
-        }
-      }
-      return path;
-    }
-    function eventMustBeStopped(event) {
-      if (!event) return false;
-      switch (event.type) {
-       case "abort":
-       case "error":
-       case "select":
-       case "change":
-       case "load":
-       case "reset":
-       case "resize":
-       case "scroll":
-       case "selectstart":
-        return true;
-      }
-      return false;
-    }
-    function isShadowInsertionPoint(node) {
-      return node instanceof HTMLShadowElement;
-    }
-    function getDestinationInsertionPoints(node) {
-      return scope.getDestinationInsertionPoints(node);
-    }
-    function eventRetargetting(path, currentTarget) {
-      if (path.length === 0) return currentTarget;
-      if (currentTarget instanceof wrappers.Window) currentTarget = currentTarget.document;
-      var currentTargetTree = getTreeScope(currentTarget);
-      var originalTarget = path[0];
-      var originalTargetTree = getTreeScope(originalTarget);
-      var relativeTargetTree = lowestCommonInclusiveAncestor(currentTargetTree, originalTargetTree);
-      for (var i = 0; i < path.length; i++) {
-        var node = path[i];
-        if (getTreeScope(node) === relativeTargetTree) return node;
-      }
-      return path[path.length - 1];
-    }
-    function getTreeScopeAncestors(treeScope) {
-      var ancestors = [];
-      for (;treeScope; treeScope = treeScope.parent) {
-        ancestors.push(treeScope);
-      }
-      return ancestors;
-    }
-    function lowestCommonInclusiveAncestor(tsA, tsB) {
-      var ancestorsA = getTreeScopeAncestors(tsA);
-      var ancestorsB = getTreeScopeAncestors(tsB);
-      var result = null;
-      while (ancestorsA.length > 0 && ancestorsB.length > 0) {
-        var a = ancestorsA.pop();
-        var b = ancestorsB.pop();
-        if (a === b) result = a; else break;
-      }
-      return result;
-    }
-    function getTreeScopeRoot(ts) {
-      if (!ts.parent) return ts;
-      return getTreeScopeRoot(ts.parent);
-    }
-    function relatedTargetResolution(event, currentTarget, relatedTarget) {
-      if (currentTarget instanceof wrappers.Window) currentTarget = currentTarget.document;
-      var currentTargetTree = getTreeScope(currentTarget);
-      var relatedTargetTree = getTreeScope(relatedTarget);
-      var relatedTargetEventPath = getEventPath(relatedTarget, event);
-      var lowestCommonAncestorTree;
-      var lowestCommonAncestorTree = lowestCommonInclusiveAncestor(currentTargetTree, relatedTargetTree);
-      if (!lowestCommonAncestorTree) lowestCommonAncestorTree = relatedTargetTree.root;
-      for (var commonAncestorTree = lowestCommonAncestorTree; commonAncestorTree; commonAncestorTree = commonAncestorTree.parent) {
-        var adjustedRelatedTarget;
-        for (var i = 0; i < relatedTargetEventPath.length; i++) {
-          var node = relatedTargetEventPath[i];
-          if (getTreeScope(node) === commonAncestorTree) return node;
-        }
-      }
-      return null;
-    }
-    function inSameTree(a, b) {
-      return getTreeScope(a) === getTreeScope(b);
-    }
-    var NONE = 0;
-    var CAPTURING_PHASE = 1;
-    var AT_TARGET = 2;
-    var BUBBLING_PHASE = 3;
-    var pendingError;
-    function dispatchOriginalEvent(originalEvent) {
-      if (handledEventsTable.get(originalEvent)) return;
-      handledEventsTable.set(originalEvent, true);
-      dispatchEvent(wrap(originalEvent), wrap(originalEvent.target));
-      if (pendingError) {
-        var err = pendingError;
-        pendingError = null;
-        throw err;
-      }
-    }
-    function isLoadLikeEvent(event) {
-      switch (event.type) {
-       case "load":
-       case "beforeunload":
-       case "unload":
-        return true;
-      }
-      return false;
-    }
-    function dispatchEvent(event, originalWrapperTarget) {
-      if (currentlyDispatchingEvents.get(event)) throw new Error("InvalidStateError");
-      currentlyDispatchingEvents.set(event, true);
-      scope.renderAllPending();
-      var eventPath;
-      var overrideTarget;
-      var win;
-      if (isLoadLikeEvent(event) && !event.bubbles) {
-        var doc = originalWrapperTarget;
-        if (doc instanceof wrappers.Document && (win = doc.defaultView)) {
-          overrideTarget = doc;
-          eventPath = [];
-        }
-      }
-      if (!eventPath) {
-        if (originalWrapperTarget instanceof wrappers.Window) {
-          win = originalWrapperTarget;
-          eventPath = [];
-        } else {
-          eventPath = getEventPath(originalWrapperTarget, event);
-          if (!isLoadLikeEvent(event)) {
-            var doc = eventPath[eventPath.length - 1];
-            if (doc instanceof wrappers.Document) win = doc.defaultView;
-          }
-        }
-      }
-      eventPathTable.set(event, eventPath);
-      if (dispatchCapturing(event, eventPath, win, overrideTarget)) {
-        if (dispatchAtTarget(event, eventPath, win, overrideTarget)) {
-          dispatchBubbling(event, eventPath, win, overrideTarget);
-        }
-      }
-      eventPhaseTable.set(event, NONE);
-      currentTargetTable.delete(event, null);
-      currentlyDispatchingEvents.delete(event);
-      return event.defaultPrevented;
-    }
-    function dispatchCapturing(event, eventPath, win, overrideTarget) {
-      var phase = CAPTURING_PHASE;
-      if (win) {
-        if (!invoke(win, event, phase, eventPath, overrideTarget)) return false;
-      }
-      for (var i = eventPath.length - 1; i > 0; i--) {
-        if (!invoke(eventPath[i], event, phase, eventPath, overrideTarget)) return false;
-      }
-      return true;
-    }
-    function dispatchAtTarget(event, eventPath, win, overrideTarget) {
-      var phase = AT_TARGET;
-      var currentTarget = eventPath[0] || win;
-      return invoke(currentTarget, event, phase, eventPath, overrideTarget);
-    }
-    function dispatchBubbling(event, eventPath, win, overrideTarget) {
-      var phase = BUBBLING_PHASE;
-      for (var i = 1; i < eventPath.length; i++) {
-        if (!invoke(eventPath[i], event, phase, eventPath, overrideTarget)) return;
-      }
-      if (win && eventPath.length > 0) {
-        invoke(win, event, phase, eventPath, overrideTarget);
-      }
-    }
-    function invoke(currentTarget, event, phase, eventPath, overrideTarget) {
-      var listeners = listenersTable.get(currentTarget);
-      if (!listeners) return true;
-      var target = overrideTarget || eventRetargetting(eventPath, currentTarget);
-      if (target === currentTarget) {
-        if (phase === CAPTURING_PHASE) return true;
-        if (phase === BUBBLING_PHASE) phase = AT_TARGET;
-      } else if (phase === BUBBLING_PHASE && !event.bubbles) {
-        return true;
-      }
-      if ("relatedTarget" in event) {
-        var originalEvent = unwrap(event);
-        var unwrappedRelatedTarget = originalEvent.relatedTarget;
-        if (unwrappedRelatedTarget) {
-          if (unwrappedRelatedTarget instanceof Object && unwrappedRelatedTarget.addEventListener) {
-            var relatedTarget = wrap(unwrappedRelatedTarget);
-            var adjusted = relatedTargetResolution(event, currentTarget, relatedTarget);
-            if (adjusted === target) return true;
-          } else {
-            adjusted = null;
-          }
-          relatedTargetTable.set(event, adjusted);
-        }
-      }
-      eventPhaseTable.set(event, phase);
-      var type = event.type;
-      var anyRemoved = false;
-      targetTable.set(event, target);
-      currentTargetTable.set(event, currentTarget);
-      listeners.depth++;
-      for (var i = 0, len = listeners.length; i < len; i++) {
-        var listener = listeners[i];
-        if (listener.removed) {
-          anyRemoved = true;
-          continue;
-        }
-        if (listener.type !== type || !listener.capture && phase === CAPTURING_PHASE || listener.capture && phase === BUBBLING_PHASE) {
-          continue;
-        }
-        try {
-          if (typeof listener.handler === "function") listener.handler.call(currentTarget, event); else listener.handler.handleEvent(event);
-          if (stopImmediatePropagationTable.get(event)) return false;
-        } catch (ex) {
-          if (!pendingError) pendingError = ex;
-        }
-      }
-      listeners.depth--;
-      if (anyRemoved && listeners.depth === 0) {
-        var copy = listeners.slice();
-        listeners.length = 0;
-        for (var i = 0; i < copy.length; i++) {
-          if (!copy[i].removed) listeners.push(copy[i]);
-        }
-      }
-      return !stopPropagationTable.get(event);
-    }
-    function Listener(type, handler, capture) {
-      this.type = type;
-      this.handler = handler;
-      this.capture = Boolean(capture);
-    }
-    Listener.prototype = {
-      equals: function(that) {
-        return this.handler === that.handler && this.type === that.type && this.capture === that.capture;
-      },
-      get removed() {
-        return this.handler === null;
-      },
-      remove: function() {
-        this.handler = null;
-      }
-    };
-    var OriginalEvent = window.Event;
-    OriginalEvent.prototype.polymerBlackList_ = {
-      returnValue: true,
-      keyLocation: true
-    };
-    function Event(type, options) {
-      if (type instanceof OriginalEvent) {
-        var impl = type;
-        if (!OriginalBeforeUnloadEvent && impl.type === "beforeunload" && !(this instanceof BeforeUnloadEvent)) {
-          return new BeforeUnloadEvent(impl);
-        }
-        setWrapper(impl, this);
-      } else {
-        return wrap(constructEvent(OriginalEvent, "Event", type, options));
-      }
-    }
-    Event.prototype = {
-      get target() {
-        return targetTable.get(this);
-      },
-      get currentTarget() {
-        return currentTargetTable.get(this);
-      },
-      get eventPhase() {
-        return eventPhaseTable.get(this);
-      },
-      get path() {
-        var eventPath = eventPathTable.get(this);
-        if (!eventPath) return [];
-        return eventPath.slice();
-      },
-      stopPropagation: function() {
-        stopPropagationTable.set(this, true);
-      },
-      stopImmediatePropagation: function() {
-        stopPropagationTable.set(this, true);
-        stopImmediatePropagationTable.set(this, true);
-      }
-    };
-    registerWrapper(OriginalEvent, Event, document.createEvent("Event"));
-    function unwrapOptions(options) {
-      if (!options || !options.relatedTarget) return options;
-      return Object.create(options, {
-        relatedTarget: {
-          value: unwrap(options.relatedTarget)
-        }
-      });
-    }
-    function registerGenericEvent(name, SuperEvent, prototype) {
-      var OriginalEvent = window[name];
-      var GenericEvent = function(type, options) {
-        if (type instanceof OriginalEvent) setWrapper(type, this); else return wrap(constructEvent(OriginalEvent, name, type, options));
-      };
-      GenericEvent.prototype = Object.create(SuperEvent.prototype);
-      if (prototype) mixin(GenericEvent.prototype, prototype);
-      if (OriginalEvent) {
-        try {
-          registerWrapper(OriginalEvent, GenericEvent, new OriginalEvent("temp"));
-        } catch (ex) {
-          registerWrapper(OriginalEvent, GenericEvent, document.createEvent(name));
-        }
-      }
-      return GenericEvent;
-    }
-    var UIEvent = registerGenericEvent("UIEvent", Event);
-    var CustomEvent = registerGenericEvent("CustomEvent", Event);
-    var relatedTargetProto = {
-      get relatedTarget() {
-        var relatedTarget = relatedTargetTable.get(this);
-        if (relatedTarget !== undefined) return relatedTarget;
-        return wrap(unwrap(this).relatedTarget);
-      }
-    };
-    function getInitFunction(name, relatedTargetIndex) {
-      return function() {
-        arguments[relatedTargetIndex] = unwrap(arguments[relatedTargetIndex]);
-        var impl = unwrap(this);
-        impl[name].apply(impl, arguments);
-      };
-    }
-    var mouseEventProto = mixin({
-      initMouseEvent: getInitFunction("initMouseEvent", 14)
-    }, relatedTargetProto);
-    var focusEventProto = mixin({
-      initFocusEvent: getInitFunction("initFocusEvent", 5)
-    }, relatedTargetProto);
-    var MouseEvent = registerGenericEvent("MouseEvent", UIEvent, mouseEventProto);
-    var FocusEvent = registerGenericEvent("FocusEvent", UIEvent, focusEventProto);
-    var defaultInitDicts = Object.create(null);
-    var supportsEventConstructors = function() {
-      try {
-        new window.FocusEvent("focus");
-      } catch (ex) {
-        return false;
-      }
-      return true;
-    }();
-    function constructEvent(OriginalEvent, name, type, options) {
-      if (supportsEventConstructors) return new OriginalEvent(type, unwrapOptions(options));
-      var event = unwrap(document.createEvent(name));
-      var defaultDict = defaultInitDicts[name];
-      var args = [ type ];
-      Object.keys(defaultDict).forEach(function(key) {
-        var v = options != null && key in options ? options[key] : defaultDict[key];
-        if (key === "relatedTarget") v = unwrap(v);
-        args.push(v);
-      });
-      event["init" + name].apply(event, args);
-      return event;
-    }
-    if (!supportsEventConstructors) {
-      var configureEventConstructor = function(name, initDict, superName) {
-        if (superName) {
-          var superDict = defaultInitDicts[superName];
-          initDict = mixin(mixin({}, superDict), initDict);
-        }
-        defaultInitDicts[name] = initDict;
-      };
-      configureEventConstructor("Event", {
-        bubbles: false,
-        cancelable: false
-      });
-      configureEventConstructor("CustomEvent", {
-        detail: null
-      }, "Event");
-      configureEventConstructor("UIEvent", {
-        view: null,
-        detail: 0
-      }, "Event");
-      configureEventConstructor("MouseEvent", {
-        screenX: 0,
-        screenY: 0,
-        clientX: 0,
-        clientY: 0,
-        ctrlKey: false,
-        altKey: false,
-        shiftKey: false,
-        metaKey: false,
-        button: 0,
-        relatedTarget: null
-      }, "UIEvent");
-      configureEventConstructor("FocusEvent", {
-        relatedTarget: null
-      }, "UIEvent");
-    }
-    var OriginalBeforeUnloadEvent = window.BeforeUnloadEvent;
-    function BeforeUnloadEvent(impl) {
-      Event.call(this, impl);
-    }
-    BeforeUnloadEvent.prototype = Object.create(Event.prototype);
-    mixin(BeforeUnloadEvent.prototype, {
-      get returnValue() {
-        return unsafeUnwrap(this).returnValue;
-      },
-      set returnValue(v) {
-        unsafeUnwrap(this).returnValue = v;
-      }
-    });
-    if (OriginalBeforeUnloadEvent) registerWrapper(OriginalBeforeUnloadEvent, BeforeUnloadEvent);
-    function isValidListener(fun) {
-      if (typeof fun === "function") return true;
-      return fun && fun.handleEvent;
-    }
-    function isMutationEvent(type) {
-      switch (type) {
-       case "DOMAttrModified":
-       case "DOMAttributeNameChanged":
-       case "DOMCharacterDataModified":
-       case "DOMElementNameChanged":
-       case "DOMNodeInserted":
-       case "DOMNodeInsertedIntoDocument":
-       case "DOMNodeRemoved":
-       case "DOMNodeRemovedFromDocument":
-       case "DOMSubtreeModified":
-        return true;
-      }
-      return false;
-    }
-    var OriginalEventTarget = window.EventTarget;
-    function EventTarget(impl) {
-      setWrapper(impl, this);
-    }
-    var methodNames = [ "addEventListener", "removeEventListener", "dispatchEvent" ];
-    [ Node, Window ].forEach(function(constructor) {
-      var p = constructor.prototype;
-      methodNames.forEach(function(name) {
-        Object.defineProperty(p, name + "_", {
-          value: p[name]
-        });
-      });
-    });
-    function getTargetToListenAt(wrapper) {
-      if (wrapper instanceof wrappers.ShadowRoot) wrapper = wrapper.host;
-      return unwrap(wrapper);
-    }
-    EventTarget.prototype = {
-      addEventListener: function(type, fun, capture) {
-        if (!isValidListener(fun) || isMutationEvent(type)) return;
-        var listener = new Listener(type, fun, capture);
-        var listeners = listenersTable.get(this);
-        if (!listeners) {
-          listeners = [];
-          listeners.depth = 0;
-          listenersTable.set(this, listeners);
-        } else {
-          for (var i = 0; i < listeners.length; i++) {
-            if (listener.equals(listeners[i])) return;
-          }
-        }
-        listeners.push(listener);
-        var target = getTargetToListenAt(this);
-        target.addEventListener_(type, dispatchOriginalEvent, true);
-      },
-      removeEventListener: function(type, fun, capture) {
-        capture = Boolean(capture);
-        var listeners = listenersTable.get(this);
-        if (!listeners) return;
-        var count = 0, found = false;
-        for (var i = 0; i < listeners.length; i++) {
-          if (listeners[i].type === type && listeners[i].capture === capture) {
-            count++;
-            if (listeners[i].handler === fun) {
-              found = true;
-              listeners[i].remove();
-            }
-          }
-        }
-        if (found && count === 1) {
-          var target = getTargetToListenAt(this);
-          target.removeEventListener_(type, dispatchOriginalEvent, true);
-        }
-      },
-      dispatchEvent: function(event) {
-        var nativeEvent = unwrap(event);
-        var eventType = nativeEvent.type;
-        handledEventsTable.set(nativeEvent, false);
-        scope.renderAllPending();
-        var tempListener;
-        if (!hasListenerInAncestors(this, eventType)) {
-          tempListener = function() {};
-          this.addEventListener(eventType, tempListener, true);
-        }
-        try {
-          return unwrap(this).dispatchEvent_(nativeEvent);
-        } finally {
-          if (tempListener) this.removeEventListener(eventType, tempListener, true);
-        }
-      }
-    };
-    function hasListener(node, type) {
-      var listeners = listenersTable.get(node);
-      if (listeners) {
-        for (var i = 0; i < listeners.length; i++) {
-          if (!listeners[i].removed && listeners[i].type === type) return true;
-        }
-      }
-      return false;
-    }
-    function hasListenerInAncestors(target, type) {
-      for (var node = unwrap(target); node; node = node.parentNode) {
-        if (hasListener(wrap(node), type)) return true;
-      }
-      return false;
-    }
-    if (OriginalEventTarget) registerWrapper(OriginalEventTarget, EventTarget);
-    function wrapEventTargetMethods(constructors) {
-      forwardMethodsToWrapper(constructors, methodNames);
-    }
-    var originalElementFromPoint = document.elementFromPoint;
-    function elementFromPoint(self, document, x, y) {
-      scope.renderAllPending();
-      var element = wrap(originalElementFromPoint.call(unsafeUnwrap(document), x, y));
-      if (!element) return null;
-      var path = getEventPath(element, null);
-      var idx = path.lastIndexOf(self);
-      if (idx == -1) return null; else path = path.slice(0, idx);
-      return eventRetargetting(path, self);
-    }
-    function getEventHandlerGetter(name) {
-      return function() {
-        var inlineEventHandlers = eventHandlersTable.get(this);
-        return inlineEventHandlers && inlineEventHandlers[name] && inlineEventHandlers[name].value || null;
-      };
-    }
-    function getEventHandlerSetter(name) {
-      var eventType = name.slice(2);
-      return function(value) {
-        var inlineEventHandlers = eventHandlersTable.get(this);
-        if (!inlineEventHandlers) {
-          inlineEventHandlers = Object.create(null);
-          eventHandlersTable.set(this, inlineEventHandlers);
-        }
-        var old = inlineEventHandlers[name];
-        if (old) this.removeEventListener(eventType, old.wrapped, false);
-        if (typeof value === "function") {
-          var wrapped = function(e) {
-            var rv = value.call(this, e);
-            if (rv === false) e.preventDefault(); else if (name === "onbeforeunload" && typeof rv === "string") e.returnValue = rv;
-          };
-          this.addEventListener(eventType, wrapped, false);
-          inlineEventHandlers[name] = {
-            value: value,
-            wrapped: wrapped
-          };
-        }
-      };
-    }
-    scope.elementFromPoint = elementFromPoint;
-    scope.getEventHandlerGetter = getEventHandlerGetter;
-    scope.getEventHandlerSetter = getEventHandlerSetter;
-    scope.wrapEventTargetMethods = wrapEventTargetMethods;
-    scope.wrappers.BeforeUnloadEvent = BeforeUnloadEvent;
-    scope.wrappers.CustomEvent = CustomEvent;
-    scope.wrappers.Event = Event;
-    scope.wrappers.EventTarget = EventTarget;
-    scope.wrappers.FocusEvent = FocusEvent;
-    scope.wrappers.MouseEvent = MouseEvent;
-    scope.wrappers.UIEvent = UIEvent;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var UIEvent = scope.wrappers.UIEvent;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var setWrapper = scope.setWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var wrap = scope.wrap;
-    var OriginalTouchEvent = window.TouchEvent;
-    if (!OriginalTouchEvent) return;
-    var nativeEvent;
-    try {
-      nativeEvent = document.createEvent("TouchEvent");
-    } catch (ex) {
-      return;
-    }
-    var nonEnumDescriptor = {
-      enumerable: false
-    };
-    function nonEnum(obj, prop) {
-      Object.defineProperty(obj, prop, nonEnumDescriptor);
-    }
-    function Touch(impl) {
-      setWrapper(impl, this);
-    }
-    Touch.prototype = {
-      get target() {
-        return wrap(unsafeUnwrap(this).target);
-      }
-    };
-    var descr = {
-      configurable: true,
-      enumerable: true,
-      get: null
-    };
-    [ "clientX", "clientY", "screenX", "screenY", "pageX", "pageY", "identifier", "webkitRadiusX", "webkitRadiusY", "webkitRotationAngle", "webkitForce" ].forEach(function(name) {
-      descr.get = function() {
-        return unsafeUnwrap(this)[name];
-      };
-      Object.defineProperty(Touch.prototype, name, descr);
-    });
-    function TouchList() {
-      this.length = 0;
-      nonEnum(this, "length");
-    }
-    TouchList.prototype = {
-      item: function(index) {
-        return this[index];
-      }
-    };
-    function wrapTouchList(nativeTouchList) {
-      var list = new TouchList();
-      for (var i = 0; i < nativeTouchList.length; i++) {
-        list[i] = new Touch(nativeTouchList[i]);
-      }
-      list.length = i;
-      return list;
-    }
-    function TouchEvent(impl) {
-      UIEvent.call(this, impl);
-    }
-    TouchEvent.prototype = Object.create(UIEvent.prototype);
-    mixin(TouchEvent.prototype, {
-      get touches() {
-        return wrapTouchList(unsafeUnwrap(this).touches);
-      },
-      get targetTouches() {
-        return wrapTouchList(unsafeUnwrap(this).targetTouches);
-      },
-      get changedTouches() {
-        return wrapTouchList(unsafeUnwrap(this).changedTouches);
-      },
-      initTouchEvent: function() {
-        throw new Error("Not implemented");
-      }
-    });
-    registerWrapper(OriginalTouchEvent, TouchEvent, nativeEvent);
-    scope.wrappers.Touch = Touch;
-    scope.wrappers.TouchEvent = TouchEvent;
-    scope.wrappers.TouchList = TouchList;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var wrap = scope.wrap;
-    var nonEnumDescriptor = {
-      enumerable: false
-    };
-    function nonEnum(obj, prop) {
-      Object.defineProperty(obj, prop, nonEnumDescriptor);
-    }
-    function NodeList() {
-      this.length = 0;
-      nonEnum(this, "length");
-    }
-    NodeList.prototype = {
-      item: function(index) {
-        return this[index];
-      }
-    };
-    nonEnum(NodeList.prototype, "item");
-    function wrapNodeList(list) {
-      if (list == null) return list;
-      var wrapperList = new NodeList();
-      for (var i = 0, length = list.length; i < length; i++) {
-        wrapperList[i] = wrap(list[i]);
-      }
-      wrapperList.length = length;
-      return wrapperList;
-    }
-    function addWrapNodeListMethod(wrapperConstructor, name) {
-      wrapperConstructor.prototype[name] = function() {
-        return wrapNodeList(unsafeUnwrap(this)[name].apply(unsafeUnwrap(this), arguments));
-      };
-    }
-    scope.wrappers.NodeList = NodeList;
-    scope.addWrapNodeListMethod = addWrapNodeListMethod;
-    scope.wrapNodeList = wrapNodeList;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    scope.wrapHTMLCollection = scope.wrapNodeList;
-    scope.wrappers.HTMLCollection = scope.wrappers.NodeList;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var EventTarget = scope.wrappers.EventTarget;
-    var NodeList = scope.wrappers.NodeList;
-    var TreeScope = scope.TreeScope;
-    var assert = scope.assert;
-    var defineWrapGetter = scope.defineWrapGetter;
-    var enqueueMutation = scope.enqueueMutation;
-    var getTreeScope = scope.getTreeScope;
-    var isWrapper = scope.isWrapper;
-    var mixin = scope.mixin;
-    var registerTransientObservers = scope.registerTransientObservers;
-    var registerWrapper = scope.registerWrapper;
-    var setTreeScope = scope.setTreeScope;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var unwrapIfNeeded = scope.unwrapIfNeeded;
-    var wrap = scope.wrap;
-    var wrapIfNeeded = scope.wrapIfNeeded;
-    var wrappers = scope.wrappers;
-    function assertIsNodeWrapper(node) {
-      assert(node instanceof Node);
-    }
-    function createOneElementNodeList(node) {
-      var nodes = new NodeList();
-      nodes[0] = node;
-      nodes.length = 1;
-      return nodes;
-    }
-    var surpressMutations = false;
-    function enqueueRemovalForInsertedNodes(node, parent, nodes) {
-      enqueueMutation(parent, "childList", {
-        removedNodes: nodes,
-        previousSibling: node.previousSibling,
-        nextSibling: node.nextSibling
-      });
-    }
-    function enqueueRemovalForInsertedDocumentFragment(df, nodes) {
-      enqueueMutation(df, "childList", {
-        removedNodes: nodes
-      });
-    }
-    function collectNodes(node, parentNode, previousNode, nextNode) {
-      if (node instanceof DocumentFragment) {
-        var nodes = collectNodesForDocumentFragment(node);
-        surpressMutations = true;
-        for (var i = nodes.length - 1; i >= 0; i--) {
-          node.removeChild(nodes[i]);
-          nodes[i].parentNode_ = parentNode;
-        }
-        surpressMutations = false;
-        for (var i = 0; i < nodes.length; i++) {
-          nodes[i].previousSibling_ = nodes[i - 1] || previousNode;
-          nodes[i].nextSibling_ = nodes[i + 1] || nextNode;
-        }
-        if (previousNode) previousNode.nextSibling_ = nodes[0];
-        if (nextNode) nextNode.previousSibling_ = nodes[nodes.length - 1];
-        return nodes;
-      }
-      var nodes = createOneElementNodeList(node);
-      var oldParent = node.parentNode;
-      if (oldParent) {
-        oldParent.removeChild(node);
-      }
-      node.parentNode_ = parentNode;
-      node.previousSibling_ = previousNode;
-      node.nextSibling_ = nextNode;
-      if (previousNode) previousNode.nextSibling_ = node;
-      if (nextNode) nextNode.previousSibling_ = node;
-      return nodes;
-    }
-    function collectNodesNative(node) {
-      if (node instanceof DocumentFragment) return collectNodesForDocumentFragment(node);
-      var nodes = createOneElementNodeList(node);
-      var oldParent = node.parentNode;
-      if (oldParent) enqueueRemovalForInsertedNodes(node, oldParent, nodes);
-      return nodes;
-    }
-    function collectNodesForDocumentFragment(node) {
-      var nodes = new NodeList();
-      var i = 0;
-      for (var child = node.firstChild; child; child = child.nextSibling) {
-        nodes[i++] = child;
-      }
-      nodes.length = i;
-      enqueueRemovalForInsertedDocumentFragment(node, nodes);
-      return nodes;
-    }
-    function snapshotNodeList(nodeList) {
-      return nodeList;
-    }
-    function nodeWasAdded(node, treeScope) {
-      setTreeScope(node, treeScope);
-      node.nodeIsInserted_();
-    }
-    function nodesWereAdded(nodes, parent) {
-      var treeScope = getTreeScope(parent);
-      for (var i = 0; i < nodes.length; i++) {
-        nodeWasAdded(nodes[i], treeScope);
-      }
-    }
-    function nodeWasRemoved(node) {
-      setTreeScope(node, new TreeScope(node, null));
-    }
-    function nodesWereRemoved(nodes) {
-      for (var i = 0; i < nodes.length; i++) {
-        nodeWasRemoved(nodes[i]);
-      }
-    }
-    function ensureSameOwnerDocument(parent, child) {
-      var ownerDoc = parent.nodeType === Node.DOCUMENT_NODE ? parent : parent.ownerDocument;
-      if (ownerDoc !== child.ownerDocument) ownerDoc.adoptNode(child);
-    }
-    function adoptNodesIfNeeded(owner, nodes) {
-      if (!nodes.length) return;
-      var ownerDoc = owner.ownerDocument;
-      if (ownerDoc === nodes[0].ownerDocument) return;
-      for (var i = 0; i < nodes.length; i++) {
-        scope.adoptNodeNoRemove(nodes[i], ownerDoc);
-      }
-    }
-    function unwrapNodesForInsertion(owner, nodes) {
-      adoptNodesIfNeeded(owner, nodes);
-      var length = nodes.length;
-      if (length === 1) return unwrap(nodes[0]);
-      var df = unwrap(owner.ownerDocument.createDocumentFragment());
-      for (var i = 0; i < length; i++) {
-        df.appendChild(unwrap(nodes[i]));
-      }
-      return df;
-    }
-    function clearChildNodes(wrapper) {
-      if (wrapper.firstChild_ !== undefined) {
-        var child = wrapper.firstChild_;
-        while (child) {
-          var tmp = child;
-          child = child.nextSibling_;
-          tmp.parentNode_ = tmp.previousSibling_ = tmp.nextSibling_ = undefined;
-        }
-      }
-      wrapper.firstChild_ = wrapper.lastChild_ = undefined;
-    }
-    function removeAllChildNodes(wrapper) {
-      if (wrapper.invalidateShadowRenderer()) {
-        var childWrapper = wrapper.firstChild;
-        while (childWrapper) {
-          assert(childWrapper.parentNode === wrapper);
-          var nextSibling = childWrapper.nextSibling;
-          var childNode = unwrap(childWrapper);
-          var parentNode = childNode.parentNode;
-          if (parentNode) originalRemoveChild.call(parentNode, childNode);
-          childWrapper.previousSibling_ = childWrapper.nextSibling_ = childWrapper.parentNode_ = null;
-          childWrapper = nextSibling;
-        }
-        wrapper.firstChild_ = wrapper.lastChild_ = null;
-      } else {
-        var node = unwrap(wrapper);
-        var child = node.firstChild;
-        var nextSibling;
-        while (child) {
-          nextSibling = child.nextSibling;
-          originalRemoveChild.call(node, child);
-          child = nextSibling;
-        }
-      }
-    }
-    function invalidateParent(node) {
-      var p = node.parentNode;
-      return p && p.invalidateShadowRenderer();
-    }
-    function cleanupNodes(nodes) {
-      for (var i = 0, n; i < nodes.length; i++) {
-        n = nodes[i];
-        n.parentNode.removeChild(n);
-      }
-    }
-    var originalImportNode = document.importNode;
-    var originalCloneNode = window.Node.prototype.cloneNode;
-    function cloneNode(node, deep, opt_doc) {
-      var clone;
-      if (opt_doc) clone = wrap(originalImportNode.call(opt_doc, unsafeUnwrap(node), false)); else clone = wrap(originalCloneNode.call(unsafeUnwrap(node), false));
-      if (deep) {
-        for (var child = node.firstChild; child; child = child.nextSibling) {
-          clone.appendChild(cloneNode(child, true, opt_doc));
-        }
-        if (node instanceof wrappers.HTMLTemplateElement) {
-          var cloneContent = clone.content;
-          for (var child = node.content.firstChild; child; child = child.nextSibling) {
-            cloneContent.appendChild(cloneNode(child, true, opt_doc));
-          }
-        }
-      }
-      return clone;
-    }
-    function contains(self, child) {
-      if (!child || getTreeScope(self) !== getTreeScope(child)) return false;
-      for (var node = child; node; node = node.parentNode) {
-        if (node === self) return true;
-      }
-      return false;
-    }
-    var OriginalNode = window.Node;
-    function Node(original) {
-      assert(original instanceof OriginalNode);
-      EventTarget.call(this, original);
-      this.parentNode_ = undefined;
-      this.firstChild_ = undefined;
-      this.lastChild_ = undefined;
-      this.nextSibling_ = undefined;
-      this.previousSibling_ = undefined;
-      this.treeScope_ = undefined;
-    }
-    var OriginalDocumentFragment = window.DocumentFragment;
-    var originalAppendChild = OriginalNode.prototype.appendChild;
-    var originalCompareDocumentPosition = OriginalNode.prototype.compareDocumentPosition;
-    var originalInsertBefore = OriginalNode.prototype.insertBefore;
-    var originalRemoveChild = OriginalNode.prototype.removeChild;
-    var originalReplaceChild = OriginalNode.prototype.replaceChild;
-    var isIe = /Trident/.test(navigator.userAgent);
-    var removeChildOriginalHelper = isIe ? function(parent, child) {
-      try {
-        originalRemoveChild.call(parent, child);
-      } catch (ex) {
-        if (!(parent instanceof OriginalDocumentFragment)) throw ex;
-      }
-    } : function(parent, child) {
-      originalRemoveChild.call(parent, child);
-    };
-    Node.prototype = Object.create(EventTarget.prototype);
-    mixin(Node.prototype, {
-      appendChild: function(childWrapper) {
-        return this.insertBefore(childWrapper, null);
-      },
-      insertBefore: function(childWrapper, refWrapper) {
-        assertIsNodeWrapper(childWrapper);
-        var refNode;
-        if (refWrapper) {
-          if (isWrapper(refWrapper)) {
-            refNode = unwrap(refWrapper);
-          } else {
-            refNode = refWrapper;
-            refWrapper = wrap(refNode);
-          }
-        } else {
-          refWrapper = null;
-          refNode = null;
-        }
-        refWrapper && assert(refWrapper.parentNode === this);
-        var nodes;
-        var previousNode = refWrapper ? refWrapper.previousSibling : this.lastChild;
-        var useNative = !this.invalidateShadowRenderer() && !invalidateParent(childWrapper);
-        if (useNative) nodes = collectNodesNative(childWrapper); else nodes = collectNodes(childWrapper, this, previousNode, refWrapper);
-        if (useNative) {
-          ensureSameOwnerDocument(this, childWrapper);
-          clearChildNodes(this);
-          originalInsertBefore.call(unsafeUnwrap(this), unwrap(childWrapper), refNode);
-        } else {
-          if (!previousNode) this.firstChild_ = nodes[0];
-          if (!refWrapper) {
-            this.lastChild_ = nodes[nodes.length - 1];
-            if (this.firstChild_ === undefined) this.firstChild_ = this.firstChild;
-          }
-          var parentNode = refNode ? refNode.parentNode : unsafeUnwrap(this);
-          if (parentNode) {
-            originalInsertBefore.call(parentNode, unwrapNodesForInsertion(this, nodes), refNode);
-          } else {
-            adoptNodesIfNeeded(this, nodes);
-          }
-        }
-        enqueueMutation(this, "childList", {
-          addedNodes: nodes,
-          nextSibling: refWrapper,
-          previousSibling: previousNode
-        });
-        nodesWereAdded(nodes, this);
-        return childWrapper;
-      },
-      removeChild: function(childWrapper) {
-        assertIsNodeWrapper(childWrapper);
-        if (childWrapper.parentNode !== this) {
-          var found = false;
-          var childNodes = this.childNodes;
-          for (var ieChild = this.firstChild; ieChild; ieChild = ieChild.nextSibling) {
-            if (ieChild === childWrapper) {
-              found = true;
-              break;
-            }
-          }
-          if (!found) {
-            throw new Error("NotFoundError");
-          }
-        }
-        var childNode = unwrap(childWrapper);
-        var childWrapperNextSibling = childWrapper.nextSibling;
-        var childWrapperPreviousSibling = childWrapper.previousSibling;
-        if (this.invalidateShadowRenderer()) {
-          var thisFirstChild = this.firstChild;
-          var thisLastChild = this.lastChild;
-          var parentNode = childNode.parentNode;
-          if (parentNode) removeChildOriginalHelper(parentNode, childNode);
-          if (thisFirstChild === childWrapper) this.firstChild_ = childWrapperNextSibling;
-          if (thisLastChild === childWrapper) this.lastChild_ = childWrapperPreviousSibling;
-          if (childWrapperPreviousSibling) childWrapperPreviousSibling.nextSibling_ = childWrapperNextSibling;
-          if (childWrapperNextSibling) {
-            childWrapperNextSibling.previousSibling_ = childWrapperPreviousSibling;
-          }
-          childWrapper.previousSibling_ = childWrapper.nextSibling_ = childWrapper.parentNode_ = undefined;
-        } else {
-          clearChildNodes(this);
-          removeChildOriginalHelper(unsafeUnwrap(this), childNode);
-        }
-        if (!surpressMutations) {
-          enqueueMutation(this, "childList", {
-            removedNodes: createOneElementNodeList(childWrapper),
-            nextSibling: childWrapperNextSibling,
-            previousSibling: childWrapperPreviousSibling
-          });
-        }
-        registerTransientObservers(this, childWrapper);
-        return childWrapper;
-      },
-      replaceChild: function(newChildWrapper, oldChildWrapper) {
-        assertIsNodeWrapper(newChildWrapper);
-        var oldChildNode;
-        if (isWrapper(oldChildWrapper)) {
-          oldChildNode = unwrap(oldChildWrapper);
-        } else {
-          oldChildNode = oldChildWrapper;
-          oldChildWrapper = wrap(oldChildNode);
-        }
-        if (oldChildWrapper.parentNode !== this) {
-          throw new Error("NotFoundError");
-        }
-        var nextNode = oldChildWrapper.nextSibling;
-        var previousNode = oldChildWrapper.previousSibling;
-        var nodes;
-        var useNative = !this.invalidateShadowRenderer() && !invalidateParent(newChildWrapper);
-        if (useNative) {
-          nodes = collectNodesNative(newChildWrapper);
-        } else {
-          if (nextNode === newChildWrapper) nextNode = newChildWrapper.nextSibling;
-          nodes = collectNodes(newChildWrapper, this, previousNode, nextNode);
-        }
-        if (!useNative) {
-          if (this.firstChild === oldChildWrapper) this.firstChild_ = nodes[0];
-          if (this.lastChild === oldChildWrapper) this.lastChild_ = nodes[nodes.length - 1];
-          oldChildWrapper.previousSibling_ = oldChildWrapper.nextSibling_ = oldChildWrapper.parentNode_ = undefined;
-          if (oldChildNode.parentNode) {
-            originalReplaceChild.call(oldChildNode.parentNode, unwrapNodesForInsertion(this, nodes), oldChildNode);
-          }
-        } else {
-          ensureSameOwnerDocument(this, newChildWrapper);
-          clearChildNodes(this);
-          originalReplaceChild.call(unsafeUnwrap(this), unwrap(newChildWrapper), oldChildNode);
-        }
-        enqueueMutation(this, "childList", {
-          addedNodes: nodes,
-          removedNodes: createOneElementNodeList(oldChildWrapper),
-          nextSibling: nextNode,
-          previousSibling: previousNode
-        });
-        nodeWasRemoved(oldChildWrapper);
-        nodesWereAdded(nodes, this);
-        return oldChildWrapper;
-      },
-      nodeIsInserted_: function() {
-        for (var child = this.firstChild; child; child = child.nextSibling) {
-          child.nodeIsInserted_();
-        }
-      },
-      hasChildNodes: function() {
-        return this.firstChild !== null;
-      },
-      get parentNode() {
-        return this.parentNode_ !== undefined ? this.parentNode_ : wrap(unsafeUnwrap(this).parentNode);
-      },
-      get firstChild() {
-        return this.firstChild_ !== undefined ? this.firstChild_ : wrap(unsafeUnwrap(this).firstChild);
-      },
-      get lastChild() {
-        return this.lastChild_ !== undefined ? this.lastChild_ : wrap(unsafeUnwrap(this).lastChild);
-      },
-      get nextSibling() {
-        return this.nextSibling_ !== undefined ? this.nextSibling_ : wrap(unsafeUnwrap(this).nextSibling);
-      },
-      get previousSibling() {
-        return this.previousSibling_ !== undefined ? this.previousSibling_ : wrap(unsafeUnwrap(this).previousSibling);
-      },
-      get parentElement() {
-        var p = this.parentNode;
-        while (p && p.nodeType !== Node.ELEMENT_NODE) {
-          p = p.parentNode;
-        }
-        return p;
-      },
-      get textContent() {
-        var s = "";
-        for (var child = this.firstChild; child; child = child.nextSibling) {
-          if (child.nodeType != Node.COMMENT_NODE) {
-            s += child.textContent;
-          }
-        }
-        return s;
-      },
-      set textContent(textContent) {
-        if (textContent == null) textContent = "";
-        var removedNodes = snapshotNodeList(this.childNodes);
-        if (this.invalidateShadowRenderer()) {
-          removeAllChildNodes(this);
-          if (textContent !== "") {
-            var textNode = unsafeUnwrap(this).ownerDocument.createTextNode(textContent);
-            this.appendChild(textNode);
-          }
-        } else {
-          clearChildNodes(this);
-          unsafeUnwrap(this).textContent = textContent;
-        }
-        var addedNodes = snapshotNodeList(this.childNodes);
-        enqueueMutation(this, "childList", {
-          addedNodes: addedNodes,
-          removedNodes: removedNodes
-        });
-        nodesWereRemoved(removedNodes);
-        nodesWereAdded(addedNodes, this);
-      },
-      get childNodes() {
-        var wrapperList = new NodeList();
-        var i = 0;
-        for (var child = this.firstChild; child; child = child.nextSibling) {
-          wrapperList[i++] = child;
-        }
-        wrapperList.length = i;
-        return wrapperList;
-      },
-      cloneNode: function(deep) {
-        return cloneNode(this, deep);
-      },
-      contains: function(child) {
-        return contains(this, wrapIfNeeded(child));
-      },
-      compareDocumentPosition: function(otherNode) {
-        return originalCompareDocumentPosition.call(unsafeUnwrap(this), unwrapIfNeeded(otherNode));
-      },
-      normalize: function() {
-        var nodes = snapshotNodeList(this.childNodes);
-        var remNodes = [];
-        var s = "";
-        var modNode;
-        for (var i = 0, n; i < nodes.length; i++) {
-          n = nodes[i];
-          if (n.nodeType === Node.TEXT_NODE) {
-            if (!modNode && !n.data.length) this.removeNode(n); else if (!modNode) modNode = n; else {
-              s += n.data;
-              remNodes.push(n);
-            }
-          } else {
-            if (modNode && remNodes.length) {
-              modNode.data += s;
-              cleanupNodes(remNodes);
-            }
-            remNodes = [];
-            s = "";
-            modNode = null;
-            if (n.childNodes.length) n.normalize();
-          }
-        }
-        if (modNode && remNodes.length) {
-          modNode.data += s;
-          cleanupNodes(remNodes);
-        }
-      }
-    });
-    defineWrapGetter(Node, "ownerDocument");
-    registerWrapper(OriginalNode, Node, document.createDocumentFragment());
-    delete Node.prototype.querySelector;
-    delete Node.prototype.querySelectorAll;
-    Node.prototype = mixin(Object.create(EventTarget.prototype), Node.prototype);
-    scope.cloneNode = cloneNode;
-    scope.nodeWasAdded = nodeWasAdded;
-    scope.nodeWasRemoved = nodeWasRemoved;
-    scope.nodesWereAdded = nodesWereAdded;
-    scope.nodesWereRemoved = nodesWereRemoved;
-    scope.originalInsertBefore = originalInsertBefore;
-    scope.originalRemoveChild = originalRemoveChild;
-    scope.snapshotNodeList = snapshotNodeList;
-    scope.wrappers.Node = Node;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLCollection = scope.wrappers.HTMLCollection;
-    var NodeList = scope.wrappers.NodeList;
-    var getTreeScope = scope.getTreeScope;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var wrap = scope.wrap;
-    var originalDocumentQuerySelector = document.querySelector;
-    var originalElementQuerySelector = document.documentElement.querySelector;
-    var originalDocumentQuerySelectorAll = document.querySelectorAll;
-    var originalElementQuerySelectorAll = document.documentElement.querySelectorAll;
-    var originalDocumentGetElementsByTagName = document.getElementsByTagName;
-    var originalElementGetElementsByTagName = document.documentElement.getElementsByTagName;
-    var originalDocumentGetElementsByTagNameNS = document.getElementsByTagNameNS;
-    var originalElementGetElementsByTagNameNS = document.documentElement.getElementsByTagNameNS;
-    var OriginalElement = window.Element;
-    var OriginalDocument = window.HTMLDocument || window.Document;
-    function filterNodeList(list, index, result, deep) {
-      var wrappedItem = null;
-      var root = null;
-      for (var i = 0, length = list.length; i < length; i++) {
-        wrappedItem = wrap(list[i]);
-        if (!deep && (root = getTreeScope(wrappedItem).root)) {
-          if (root instanceof scope.wrappers.ShadowRoot) {
-            continue;
-          }
-        }
-        result[index++] = wrappedItem;
-      }
-      return index;
-    }
-    function shimSelector(selector) {
-      return String(selector).replace(/\/deep\//g, " ");
-    }
-    function findOne(node, selector) {
-      var m, el = node.firstElementChild;
-      while (el) {
-        if (el.matches(selector)) return el;
-        m = findOne(el, selector);
-        if (m) return m;
-        el = el.nextElementSibling;
-      }
-      return null;
-    }
-    function matchesSelector(el, selector) {
-      return el.matches(selector);
-    }
-    var XHTML_NS = "http://www.w3.org/1999/xhtml";
-    function matchesTagName(el, localName, localNameLowerCase) {
-      var ln = el.localName;
-      return ln === localName || ln === localNameLowerCase && el.namespaceURI === XHTML_NS;
-    }
-    function matchesEveryThing() {
-      return true;
-    }
-    function matchesLocalNameOnly(el, ns, localName) {
-      return el.localName === localName;
-    }
-    function matchesNameSpace(el, ns) {
-      return el.namespaceURI === ns;
-    }
-    function matchesLocalNameNS(el, ns, localName) {
-      return el.namespaceURI === ns && el.localName === localName;
-    }
-    function findElements(node, index, result, p, arg0, arg1) {
-      var el = node.firstElementChild;
-      while (el) {
-        if (p(el, arg0, arg1)) result[index++] = el;
-        index = findElements(el, index, result, p, arg0, arg1);
-        el = el.nextElementSibling;
-      }
-      return index;
-    }
-    function querySelectorAllFiltered(p, index, result, selector, deep) {
-      var target = unsafeUnwrap(this);
-      var list;
-      var root = getTreeScope(this).root;
-      if (root instanceof scope.wrappers.ShadowRoot) {
-        return findElements(this, index, result, p, selector, null);
-      } else if (target instanceof OriginalElement) {
-        list = originalElementQuerySelectorAll.call(target, selector);
-      } else if (target instanceof OriginalDocument) {
-        list = originalDocumentQuerySelectorAll.call(target, selector);
-      } else {
-        return findElements(this, index, result, p, selector, null);
-      }
-      return filterNodeList(list, index, result, deep);
-    }
-    var SelectorsInterface = {
-      querySelector: function(selector) {
-        var shimmed = shimSelector(selector);
-        var deep = shimmed !== selector;
-        selector = shimmed;
-        var target = unsafeUnwrap(this);
-        var wrappedItem;
-        var root = getTreeScope(this).root;
-        if (root instanceof scope.wrappers.ShadowRoot) {
-          return findOne(this, selector);
-        } else if (target instanceof OriginalElement) {
-          wrappedItem = wrap(originalElementQuerySelector.call(target, selector));
-        } else if (target instanceof OriginalDocument) {
-          wrappedItem = wrap(originalDocumentQuerySelector.call(target, selector));
-        } else {
-          return findOne(this, selector);
-        }
-        if (!wrappedItem) {
-          return wrappedItem;
-        } else if (!deep && (root = getTreeScope(wrappedItem).root)) {
-          if (root instanceof scope.wrappers.ShadowRoot) {
-            return findOne(this, selector);
-          }
-        }
-        return wrappedItem;
-      },
-      querySelectorAll: function(selector) {
-        var shimmed = shimSelector(selector);
-        var deep = shimmed !== selector;
-        selector = shimmed;
-        var result = new NodeList();
-        result.length = querySelectorAllFiltered.call(this, matchesSelector, 0, result, selector, deep);
-        return result;
-      }
-    };
-    function getElementsByTagNameFiltered(p, index, result, localName, lowercase) {
-      var target = unsafeUnwrap(this);
-      var list;
-      var root = getTreeScope(this).root;
-      if (root instanceof scope.wrappers.ShadowRoot) {
-        return findElements(this, index, result, p, localName, lowercase);
-      } else if (target instanceof OriginalElement) {
-        list = originalElementGetElementsByTagName.call(target, localName, lowercase);
-      } else if (target instanceof OriginalDocument) {
-        list = originalDocumentGetElementsByTagName.call(target, localName, lowercase);
-      } else {
-        return findElements(this, index, result, p, localName, lowercase);
-      }
-      return filterNodeList(list, index, result, false);
-    }
-    function getElementsByTagNameNSFiltered(p, index, result, ns, localName) {
-      var target = unsafeUnwrap(this);
-      var list;
-      var root = getTreeScope(this).root;
-      if (root instanceof scope.wrappers.ShadowRoot) {
-        return findElements(this, index, result, p, ns, localName);
-      } else if (target instanceof OriginalElement) {
-        list = originalElementGetElementsByTagNameNS.call(target, ns, localName);
-      } else if (target instanceof OriginalDocument) {
-        list = originalDocumentGetElementsByTagNameNS.call(target, ns, localName);
-      } else {
-        return findElements(this, index, result, p, ns, localName);
-      }
-      return filterNodeList(list, index, result, false);
-    }
-    var GetElementsByInterface = {
-      getElementsByTagName: function(localName) {
-        var result = new HTMLCollection();
-        var match = localName === "*" ? matchesEveryThing : matchesTagName;
-        result.length = getElementsByTagNameFiltered.call(this, match, 0, result, localName, localName.toLowerCase());
-        return result;
-      },
-      getElementsByClassName: function(className) {
-        return this.querySelectorAll("." + className);
-      },
-      getElementsByTagNameNS: function(ns, localName) {
-        var result = new HTMLCollection();
-        var match = null;
-        if (ns === "*") {
-          match = localName === "*" ? matchesEveryThing : matchesLocalNameOnly;
-        } else {
-          match = localName === "*" ? matchesNameSpace : matchesLocalNameNS;
-        }
-        result.length = getElementsByTagNameNSFiltered.call(this, match, 0, result, ns || null, localName);
-        return result;
-      }
-    };
-    scope.GetElementsByInterface = GetElementsByInterface;
-    scope.SelectorsInterface = SelectorsInterface;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var NodeList = scope.wrappers.NodeList;
-    function forwardElement(node) {
-      while (node && node.nodeType !== Node.ELEMENT_NODE) {
-        node = node.nextSibling;
-      }
-      return node;
-    }
-    function backwardsElement(node) {
-      while (node && node.nodeType !== Node.ELEMENT_NODE) {
-        node = node.previousSibling;
-      }
-      return node;
-    }
-    var ParentNodeInterface = {
-      get firstElementChild() {
-        return forwardElement(this.firstChild);
-      },
-      get lastElementChild() {
-        return backwardsElement(this.lastChild);
-      },
-      get childElementCount() {
-        var count = 0;
-        for (var child = this.firstElementChild; child; child = child.nextElementSibling) {
-          count++;
-        }
-        return count;
-      },
-      get children() {
-        var wrapperList = new NodeList();
-        var i = 0;
-        for (var child = this.firstElementChild; child; child = child.nextElementSibling) {
-          wrapperList[i++] = child;
-        }
-        wrapperList.length = i;
-        return wrapperList;
-      },
-      remove: function() {
-        var p = this.parentNode;
-        if (p) p.removeChild(this);
-      }
-    };
-    var ChildNodeInterface = {
-      get nextElementSibling() {
-        return forwardElement(this.nextSibling);
-      },
-      get previousElementSibling() {
-        return backwardsElement(this.previousSibling);
-      }
-    };
-    scope.ChildNodeInterface = ChildNodeInterface;
-    scope.ParentNodeInterface = ParentNodeInterface;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var ChildNodeInterface = scope.ChildNodeInterface;
-    var Node = scope.wrappers.Node;
-    var enqueueMutation = scope.enqueueMutation;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var OriginalCharacterData = window.CharacterData;
-    function CharacterData(node) {
-      Node.call(this, node);
-    }
-    CharacterData.prototype = Object.create(Node.prototype);
-    mixin(CharacterData.prototype, {
-      get textContent() {
-        return this.data;
-      },
-      set textContent(value) {
-        this.data = value;
-      },
-      get data() {
-        return unsafeUnwrap(this).data;
-      },
-      set data(value) {
-        var oldValue = unsafeUnwrap(this).data;
-        enqueueMutation(this, "characterData", {
-          oldValue: oldValue
-        });
-        unsafeUnwrap(this).data = value;
-      }
-    });
-    mixin(CharacterData.prototype, ChildNodeInterface);
-    registerWrapper(OriginalCharacterData, CharacterData, document.createTextNode(""));
-    scope.wrappers.CharacterData = CharacterData;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var CharacterData = scope.wrappers.CharacterData;
-    var enqueueMutation = scope.enqueueMutation;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    function toUInt32(x) {
-      return x >>> 0;
-    }
-    var OriginalText = window.Text;
-    function Text(node) {
-      CharacterData.call(this, node);
-    }
-    Text.prototype = Object.create(CharacterData.prototype);
-    mixin(Text.prototype, {
-      splitText: function(offset) {
-        offset = toUInt32(offset);
-        var s = this.data;
-        if (offset > s.length) throw new Error("IndexSizeError");
-        var head = s.slice(0, offset);
-        var tail = s.slice(offset);
-        this.data = head;
-        var newTextNode = this.ownerDocument.createTextNode(tail);
-        if (this.parentNode) this.parentNode.insertBefore(newTextNode, this.nextSibling);
-        return newTextNode;
-      }
-    });
-    registerWrapper(OriginalText, Text, document.createTextNode(""));
-    scope.wrappers.Text = Text;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var setWrapper = scope.setWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    function invalidateClass(el) {
-      scope.invalidateRendererBasedOnAttribute(el, "class");
-    }
-    function DOMTokenList(impl, ownerElement) {
-      setWrapper(impl, this);
-      this.ownerElement_ = ownerElement;
-    }
-    DOMTokenList.prototype = {
-      constructor: DOMTokenList,
-      get length() {
-        return unsafeUnwrap(this).length;
-      },
-      item: function(index) {
-        return unsafeUnwrap(this).item(index);
-      },
-      contains: function(token) {
-        return unsafeUnwrap(this).contains(token);
-      },
-      add: function() {
-        unsafeUnwrap(this).add.apply(unsafeUnwrap(this), arguments);
-        invalidateClass(this.ownerElement_);
-      },
-      remove: function() {
-        unsafeUnwrap(this).remove.apply(unsafeUnwrap(this), arguments);
-        invalidateClass(this.ownerElement_);
-      },
-      toggle: function(token) {
-        var rv = unsafeUnwrap(this).toggle.apply(unsafeUnwrap(this), arguments);
-        invalidateClass(this.ownerElement_);
-        return rv;
-      },
-      toString: function() {
-        return unsafeUnwrap(this).toString();
-      }
-    };
-    scope.wrappers.DOMTokenList = DOMTokenList;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var ChildNodeInterface = scope.ChildNodeInterface;
-    var GetElementsByInterface = scope.GetElementsByInterface;
-    var Node = scope.wrappers.Node;
-    var DOMTokenList = scope.wrappers.DOMTokenList;
-    var ParentNodeInterface = scope.ParentNodeInterface;
-    var SelectorsInterface = scope.SelectorsInterface;
-    var addWrapNodeListMethod = scope.addWrapNodeListMethod;
-    var enqueueMutation = scope.enqueueMutation;
-    var mixin = scope.mixin;
-    var oneOf = scope.oneOf;
-    var registerWrapper = scope.registerWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var wrappers = scope.wrappers;
-    var OriginalElement = window.Element;
-    var matchesNames = [ "matches", "mozMatchesSelector", "msMatchesSelector", "webkitMatchesSelector" ].filter(function(name) {
-      return OriginalElement.prototype[name];
-    });
-    var matchesName = matchesNames[0];
-    var originalMatches = OriginalElement.prototype[matchesName];
-    function invalidateRendererBasedOnAttribute(element, name) {
-      var p = element.parentNode;
-      if (!p || !p.shadowRoot) return;
-      var renderer = scope.getRendererForHost(p);
-      if (renderer.dependsOnAttribute(name)) renderer.invalidate();
-    }
-    function enqueAttributeChange(element, name, oldValue) {
-      enqueueMutation(element, "attributes", {
-        name: name,
-        namespace: null,
-        oldValue: oldValue
-      });
-    }
-    var classListTable = new WeakMap();
-    function Element(node) {
-      Node.call(this, node);
-    }
-    Element.prototype = Object.create(Node.prototype);
-    mixin(Element.prototype, {
-      createShadowRoot: function() {
-        var newShadowRoot = new wrappers.ShadowRoot(this);
-        unsafeUnwrap(this).polymerShadowRoot_ = newShadowRoot;
-        var renderer = scope.getRendererForHost(this);
-        renderer.invalidate();
-        return newShadowRoot;
-      },
-      get shadowRoot() {
-        return unsafeUnwrap(this).polymerShadowRoot_ || null;
-      },
-      setAttribute: function(name, value) {
-        var oldValue = unsafeUnwrap(this).getAttribute(name);
-        unsafeUnwrap(this).setAttribute(name, value);
-        enqueAttributeChange(this, name, oldValue);
-        invalidateRendererBasedOnAttribute(this, name);
-      },
-      removeAttribute: function(name) {
-        var oldValue = unsafeUnwrap(this).getAttribute(name);
-        unsafeUnwrap(this).removeAttribute(name);
-        enqueAttributeChange(this, name, oldValue);
-        invalidateRendererBasedOnAttribute(this, name);
-      },
-      matches: function(selector) {
-        return originalMatches.call(unsafeUnwrap(this), selector);
-      },
-      get classList() {
-        var list = classListTable.get(this);
-        if (!list) {
-          classListTable.set(this, list = new DOMTokenList(unsafeUnwrap(this).classList, this));
-        }
-        return list;
-      },
-      get className() {
-        return unsafeUnwrap(this).className;
-      },
-      set className(v) {
-        this.setAttribute("class", v);
-      },
-      get id() {
-        return unsafeUnwrap(this).id;
-      },
-      set id(v) {
-        this.setAttribute("id", v);
-      }
-    });
-    matchesNames.forEach(function(name) {
-      if (name !== "matches") {
-        Element.prototype[name] = function(selector) {
-          return this.matches(selector);
-        };
-      }
-    });
-    if (OriginalElement.prototype.webkitCreateShadowRoot) {
-      Element.prototype.webkitCreateShadowRoot = Element.prototype.createShadowRoot;
-    }
-    mixin(Element.prototype, ChildNodeInterface);
-    mixin(Element.prototype, GetElementsByInterface);
-    mixin(Element.prototype, ParentNodeInterface);
-    mixin(Element.prototype, SelectorsInterface);
-    registerWrapper(OriginalElement, Element, document.createElementNS(null, "x"));
-    scope.invalidateRendererBasedOnAttribute = invalidateRendererBasedOnAttribute;
-    scope.matchesNames = matchesNames;
-    scope.wrappers.Element = Element;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var Element = scope.wrappers.Element;
-    var defineGetter = scope.defineGetter;
-    var enqueueMutation = scope.enqueueMutation;
-    var mixin = scope.mixin;
-    var nodesWereAdded = scope.nodesWereAdded;
-    var nodesWereRemoved = scope.nodesWereRemoved;
-    var registerWrapper = scope.registerWrapper;
-    var snapshotNodeList = scope.snapshotNodeList;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var wrappers = scope.wrappers;
-    var escapeAttrRegExp = /[&\u00A0"]/g;
-    var escapeDataRegExp = /[&\u00A0<>]/g;
-    function escapeReplace(c) {
-      switch (c) {
-       case "&":
-        return "&amp;";
-
-       case "<":
-        return "&lt;";
-
-       case ">":
-        return "&gt;";
-
-       case '"':
-        return "&quot;";
-
-       case " ":
-        return "&nbsp;";
-      }
-    }
-    function escapeAttr(s) {
-      return s.replace(escapeAttrRegExp, escapeReplace);
-    }
-    function escapeData(s) {
-      return s.replace(escapeDataRegExp, escapeReplace);
-    }
-    function makeSet(arr) {
-      var set = {};
-      for (var i = 0; i < arr.length; i++) {
-        set[arr[i]] = true;
-      }
-      return set;
-    }
-    var voidElements = makeSet([ "area", "base", "br", "col", "command", "embed", "hr", "img", "input", "keygen", "link", "meta", "param", "source", "track", "wbr" ]);
-    var plaintextParents = makeSet([ "style", "script", "xmp", "iframe", "noembed", "noframes", "plaintext", "noscript" ]);
-    function getOuterHTML(node, parentNode) {
-      switch (node.nodeType) {
-       case Node.ELEMENT_NODE:
-        var tagName = node.tagName.toLowerCase();
-        var s = "<" + tagName;
-        var attrs = node.attributes;
-        for (var i = 0, attr; attr = attrs[i]; i++) {
-          s += " " + attr.name + '="' + escapeAttr(attr.value) + '"';
-        }
-        s += ">";
-        if (voidElements[tagName]) return s;
-        return s + getInnerHTML(node) + "</" + tagName + ">";
-
-       case Node.TEXT_NODE:
-        var data = node.data;
-        if (parentNode && plaintextParents[parentNode.localName]) return data;
-        return escapeData(data);
-
-       case Node.COMMENT_NODE:
-        return "<!--" + node.data + "-->";
-
-       default:
-        console.error(node);
-        throw new Error("not implemented");
-      }
-    }
-    function getInnerHTML(node) {
-      if (node instanceof wrappers.HTMLTemplateElement) node = node.content;
-      var s = "";
-      for (var child = node.firstChild; child; child = child.nextSibling) {
-        s += getOuterHTML(child, node);
-      }
-      return s;
-    }
-    function setInnerHTML(node, value, opt_tagName) {
-      var tagName = opt_tagName || "div";
-      node.textContent = "";
-      var tempElement = unwrap(node.ownerDocument.createElement(tagName));
-      tempElement.innerHTML = value;
-      var firstChild;
-      while (firstChild = tempElement.firstChild) {
-        node.appendChild(wrap(firstChild));
-      }
-    }
-    var oldIe = /MSIE/.test(navigator.userAgent);
-    var OriginalHTMLElement = window.HTMLElement;
-    var OriginalHTMLTemplateElement = window.HTMLTemplateElement;
-    function HTMLElement(node) {
-      Element.call(this, node);
-    }
-    HTMLElement.prototype = Object.create(Element.prototype);
-    mixin(HTMLElement.prototype, {
-      get innerHTML() {
-        return getInnerHTML(this);
-      },
-      set innerHTML(value) {
-        if (oldIe && plaintextParents[this.localName]) {
-          this.textContent = value;
-          return;
-        }
-        var removedNodes = snapshotNodeList(this.childNodes);
-        if (this.invalidateShadowRenderer()) {
-          if (this instanceof wrappers.HTMLTemplateElement) setInnerHTML(this.content, value); else setInnerHTML(this, value, this.tagName);
-        } else if (!OriginalHTMLTemplateElement && this instanceof wrappers.HTMLTemplateElement) {
-          setInnerHTML(this.content, value);
-        } else {
-          unsafeUnwrap(this).innerHTML = value;
-        }
-        var addedNodes = snapshotNodeList(this.childNodes);
-        enqueueMutation(this, "childList", {
-          addedNodes: addedNodes,
-          removedNodes: removedNodes
-        });
-        nodesWereRemoved(removedNodes);
-        nodesWereAdded(addedNodes, this);
-      },
-      get outerHTML() {
-        return getOuterHTML(this, this.parentNode);
-      },
-      set outerHTML(value) {
-        var p = this.parentNode;
-        if (p) {
-          p.invalidateShadowRenderer();
-          var df = frag(p, value);
-          p.replaceChild(df, this);
-        }
-      },
-      insertAdjacentHTML: function(position, text) {
-        var contextElement, refNode;
-        switch (String(position).toLowerCase()) {
-         case "beforebegin":
-          contextElement = this.parentNode;
-          refNode = this;
-          break;
-
-         case "afterend":
-          contextElement = this.parentNode;
-          refNode = this.nextSibling;
-          break;
-
-         case "afterbegin":
-          contextElement = this;
-          refNode = this.firstChild;
-          break;
-
-         case "beforeend":
-          contextElement = this;
-          refNode = null;
-          break;
-
-         default:
-          return;
-        }
-        var df = frag(contextElement, text);
-        contextElement.insertBefore(df, refNode);
-      },
-      get hidden() {
-        return this.hasAttribute("hidden");
-      },
-      set hidden(v) {
-        if (v) {
-          this.setAttribute("hidden", "");
-        } else {
-          this.removeAttribute("hidden");
-        }
-      }
-    });
-    function frag(contextElement, html) {
-      var p = unwrap(contextElement.cloneNode(false));
-      p.innerHTML = html;
-      var df = unwrap(document.createDocumentFragment());
-      var c;
-      while (c = p.firstChild) {
-        df.appendChild(c);
-      }
-      return wrap(df);
-    }
-    function getter(name) {
-      return function() {
-        scope.renderAllPending();
-        return unsafeUnwrap(this)[name];
-      };
-    }
-    function getterRequiresRendering(name) {
-      defineGetter(HTMLElement, name, getter(name));
-    }
-    [ "clientHeight", "clientLeft", "clientTop", "clientWidth", "offsetHeight", "offsetLeft", "offsetTop", "offsetWidth", "scrollHeight", "scrollWidth" ].forEach(getterRequiresRendering);
-    function getterAndSetterRequiresRendering(name) {
-      Object.defineProperty(HTMLElement.prototype, name, {
-        get: getter(name),
-        set: function(v) {
-          scope.renderAllPending();
-          unsafeUnwrap(this)[name] = v;
-        },
-        configurable: true,
-        enumerable: true
-      });
-    }
-    [ "scrollLeft", "scrollTop" ].forEach(getterAndSetterRequiresRendering);
-    function methodRequiresRendering(name) {
-      Object.defineProperty(HTMLElement.prototype, name, {
-        value: function() {
-          scope.renderAllPending();
-          return unsafeUnwrap(this)[name].apply(unsafeUnwrap(this), arguments);
-        },
-        configurable: true,
-        enumerable: true
-      });
-    }
-    [ "getBoundingClientRect", "getClientRects", "scrollIntoView" ].forEach(methodRequiresRendering);
-    registerWrapper(OriginalHTMLElement, HTMLElement, document.createElement("b"));
-    scope.wrappers.HTMLElement = HTMLElement;
-    scope.getInnerHTML = getInnerHTML;
-    scope.setInnerHTML = setInnerHTML;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var wrap = scope.wrap;
-    var OriginalHTMLCanvasElement = window.HTMLCanvasElement;
-    function HTMLCanvasElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLCanvasElement.prototype = Object.create(HTMLElement.prototype);
-    mixin(HTMLCanvasElement.prototype, {
-      getContext: function() {
-        var context = unsafeUnwrap(this).getContext.apply(unsafeUnwrap(this), arguments);
-        return context && wrap(context);
-      }
-    });
-    registerWrapper(OriginalHTMLCanvasElement, HTMLCanvasElement, document.createElement("canvas"));
-    scope.wrappers.HTMLCanvasElement = HTMLCanvasElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var OriginalHTMLContentElement = window.HTMLContentElement;
-    function HTMLContentElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLContentElement.prototype = Object.create(HTMLElement.prototype);
-    mixin(HTMLContentElement.prototype, {
-      constructor: HTMLContentElement,
-      get select() {
-        return this.getAttribute("select");
-      },
-      set select(value) {
-        this.setAttribute("select", value);
-      },
-      setAttribute: function(n, v) {
-        HTMLElement.prototype.setAttribute.call(this, n, v);
-        if (String(n).toLowerCase() === "select") this.invalidateShadowRenderer(true);
-      }
-    });
-    if (OriginalHTMLContentElement) registerWrapper(OriginalHTMLContentElement, HTMLContentElement);
-    scope.wrappers.HTMLContentElement = HTMLContentElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var wrapHTMLCollection = scope.wrapHTMLCollection;
-    var unwrap = scope.unwrap;
-    var OriginalHTMLFormElement = window.HTMLFormElement;
-    function HTMLFormElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLFormElement.prototype = Object.create(HTMLElement.prototype);
-    mixin(HTMLFormElement.prototype, {
-      get elements() {
-        return wrapHTMLCollection(unwrap(this).elements);
-      }
-    });
-    registerWrapper(OriginalHTMLFormElement, HTMLFormElement, document.createElement("form"));
-    scope.wrappers.HTMLFormElement = HTMLFormElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var registerWrapper = scope.registerWrapper;
-    var unwrap = scope.unwrap;
-    var rewrap = scope.rewrap;
-    var OriginalHTMLImageElement = window.HTMLImageElement;
-    function HTMLImageElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLImageElement.prototype = Object.create(HTMLElement.prototype);
-    registerWrapper(OriginalHTMLImageElement, HTMLImageElement, document.createElement("img"));
-    function Image(width, height) {
-      if (!(this instanceof Image)) {
-        throw new TypeError("DOM object constructor cannot be called as a function.");
-      }
-      var node = unwrap(document.createElement("img"));
-      HTMLElement.call(this, node);
-      rewrap(node, this);
-      if (width !== undefined) node.width = width;
-      if (height !== undefined) node.height = height;
-    }
-    Image.prototype = HTMLImageElement.prototype;
-    scope.wrappers.HTMLImageElement = HTMLImageElement;
-    scope.wrappers.Image = Image;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var NodeList = scope.wrappers.NodeList;
-    var registerWrapper = scope.registerWrapper;
-    var OriginalHTMLShadowElement = window.HTMLShadowElement;
-    function HTMLShadowElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLShadowElement.prototype = Object.create(HTMLElement.prototype);
-    HTMLShadowElement.prototype.constructor = HTMLShadowElement;
-    if (OriginalHTMLShadowElement) registerWrapper(OriginalHTMLShadowElement, HTMLShadowElement);
-    scope.wrappers.HTMLShadowElement = HTMLShadowElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var contentTable = new WeakMap();
-    var templateContentsOwnerTable = new WeakMap();
-    function getTemplateContentsOwner(doc) {
-      if (!doc.defaultView) return doc;
-      var d = templateContentsOwnerTable.get(doc);
-      if (!d) {
-        d = doc.implementation.createHTMLDocument("");
-        while (d.lastChild) {
-          d.removeChild(d.lastChild);
-        }
-        templateContentsOwnerTable.set(doc, d);
-      }
-      return d;
-    }
-    function extractContent(templateElement) {
-      var doc = getTemplateContentsOwner(templateElement.ownerDocument);
-      var df = unwrap(doc.createDocumentFragment());
-      var child;
-      while (child = templateElement.firstChild) {
-        df.appendChild(child);
-      }
-      return df;
-    }
-    var OriginalHTMLTemplateElement = window.HTMLTemplateElement;
-    function HTMLTemplateElement(node) {
-      HTMLElement.call(this, node);
-      if (!OriginalHTMLTemplateElement) {
-        var content = extractContent(node);
-        contentTable.set(this, wrap(content));
-      }
-    }
-    HTMLTemplateElement.prototype = Object.create(HTMLElement.prototype);
-    mixin(HTMLTemplateElement.prototype, {
-      constructor: HTMLTemplateElement,
-      get content() {
-        if (OriginalHTMLTemplateElement) return wrap(unsafeUnwrap(this).content);
-        return contentTable.get(this);
-      }
-    });
-    if (OriginalHTMLTemplateElement) registerWrapper(OriginalHTMLTemplateElement, HTMLTemplateElement);
-    scope.wrappers.HTMLTemplateElement = HTMLTemplateElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var registerWrapper = scope.registerWrapper;
-    var OriginalHTMLMediaElement = window.HTMLMediaElement;
-    if (!OriginalHTMLMediaElement) return;
-    function HTMLMediaElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLMediaElement.prototype = Object.create(HTMLElement.prototype);
-    registerWrapper(OriginalHTMLMediaElement, HTMLMediaElement, document.createElement("audio"));
-    scope.wrappers.HTMLMediaElement = HTMLMediaElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLMediaElement = scope.wrappers.HTMLMediaElement;
-    var registerWrapper = scope.registerWrapper;
-    var unwrap = scope.unwrap;
-    var rewrap = scope.rewrap;
-    var OriginalHTMLAudioElement = window.HTMLAudioElement;
-    if (!OriginalHTMLAudioElement) return;
-    function HTMLAudioElement(node) {
-      HTMLMediaElement.call(this, node);
-    }
-    HTMLAudioElement.prototype = Object.create(HTMLMediaElement.prototype);
-    registerWrapper(OriginalHTMLAudioElement, HTMLAudioElement, document.createElement("audio"));
-    function Audio(src) {
-      if (!(this instanceof Audio)) {
-        throw new TypeError("DOM object constructor cannot be called as a function.");
-      }
-      var node = unwrap(document.createElement("audio"));
-      HTMLMediaElement.call(this, node);
-      rewrap(node, this);
-      node.setAttribute("preload", "auto");
-      if (src !== undefined) node.setAttribute("src", src);
-    }
-    Audio.prototype = HTMLAudioElement.prototype;
-    scope.wrappers.HTMLAudioElement = HTMLAudioElement;
-    scope.wrappers.Audio = Audio;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var rewrap = scope.rewrap;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var OriginalHTMLOptionElement = window.HTMLOptionElement;
-    function trimText(s) {
-      return s.replace(/\s+/g, " ").trim();
-    }
-    function HTMLOptionElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLOptionElement.prototype = Object.create(HTMLElement.prototype);
-    mixin(HTMLOptionElement.prototype, {
-      get text() {
-        return trimText(this.textContent);
-      },
-      set text(value) {
-        this.textContent = trimText(String(value));
-      },
-      get form() {
-        return wrap(unwrap(this).form);
-      }
-    });
-    registerWrapper(OriginalHTMLOptionElement, HTMLOptionElement, document.createElement("option"));
-    function Option(text, value, defaultSelected, selected) {
-      if (!(this instanceof Option)) {
-        throw new TypeError("DOM object constructor cannot be called as a function.");
-      }
-      var node = unwrap(document.createElement("option"));
-      HTMLElement.call(this, node);
-      rewrap(node, this);
-      if (text !== undefined) node.text = text;
-      if (value !== undefined) node.setAttribute("value", value);
-      if (defaultSelected === true) node.setAttribute("selected", "");
-      node.selected = selected === true;
-    }
-    Option.prototype = HTMLOptionElement.prototype;
-    scope.wrappers.HTMLOptionElement = HTMLOptionElement;
-    scope.wrappers.Option = Option;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var OriginalHTMLSelectElement = window.HTMLSelectElement;
-    function HTMLSelectElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLSelectElement.prototype = Object.create(HTMLElement.prototype);
-    mixin(HTMLSelectElement.prototype, {
-      add: function(element, before) {
-        if (typeof before === "object") before = unwrap(before);
-        unwrap(this).add(unwrap(element), before);
-      },
-      remove: function(indexOrNode) {
-        if (indexOrNode === undefined) {
-          HTMLElement.prototype.remove.call(this);
-          return;
-        }
-        if (typeof indexOrNode === "object") indexOrNode = unwrap(indexOrNode);
-        unwrap(this).remove(indexOrNode);
-      },
-      get form() {
-        return wrap(unwrap(this).form);
-      }
-    });
-    registerWrapper(OriginalHTMLSelectElement, HTMLSelectElement, document.createElement("select"));
-    scope.wrappers.HTMLSelectElement = HTMLSelectElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var wrapHTMLCollection = scope.wrapHTMLCollection;
-    var OriginalHTMLTableElement = window.HTMLTableElement;
-    function HTMLTableElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLTableElement.prototype = Object.create(HTMLElement.prototype);
-    mixin(HTMLTableElement.prototype, {
-      get caption() {
-        return wrap(unwrap(this).caption);
-      },
-      createCaption: function() {
-        return wrap(unwrap(this).createCaption());
-      },
-      get tHead() {
-        return wrap(unwrap(this).tHead);
-      },
-      createTHead: function() {
-        return wrap(unwrap(this).createTHead());
-      },
-      createTFoot: function() {
-        return wrap(unwrap(this).createTFoot());
-      },
-      get tFoot() {
-        return wrap(unwrap(this).tFoot);
-      },
-      get tBodies() {
-        return wrapHTMLCollection(unwrap(this).tBodies);
-      },
-      createTBody: function() {
-        return wrap(unwrap(this).createTBody());
-      },
-      get rows() {
-        return wrapHTMLCollection(unwrap(this).rows);
-      },
-      insertRow: function(index) {
-        return wrap(unwrap(this).insertRow(index));
-      }
-    });
-    registerWrapper(OriginalHTMLTableElement, HTMLTableElement, document.createElement("table"));
-    scope.wrappers.HTMLTableElement = HTMLTableElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var wrapHTMLCollection = scope.wrapHTMLCollection;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var OriginalHTMLTableSectionElement = window.HTMLTableSectionElement;
-    function HTMLTableSectionElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLTableSectionElement.prototype = Object.create(HTMLElement.prototype);
-    mixin(HTMLTableSectionElement.prototype, {
-      constructor: HTMLTableSectionElement,
-      get rows() {
-        return wrapHTMLCollection(unwrap(this).rows);
-      },
-      insertRow: function(index) {
-        return wrap(unwrap(this).insertRow(index));
-      }
-    });
-    registerWrapper(OriginalHTMLTableSectionElement, HTMLTableSectionElement, document.createElement("thead"));
-    scope.wrappers.HTMLTableSectionElement = HTMLTableSectionElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var wrapHTMLCollection = scope.wrapHTMLCollection;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var OriginalHTMLTableRowElement = window.HTMLTableRowElement;
-    function HTMLTableRowElement(node) {
-      HTMLElement.call(this, node);
-    }
-    HTMLTableRowElement.prototype = Object.create(HTMLElement.prototype);
-    mixin(HTMLTableRowElement.prototype, {
-      get cells() {
-        return wrapHTMLCollection(unwrap(this).cells);
-      },
-      insertCell: function(index) {
-        return wrap(unwrap(this).insertCell(index));
-      }
-    });
-    registerWrapper(OriginalHTMLTableRowElement, HTMLTableRowElement, document.createElement("tr"));
-    scope.wrappers.HTMLTableRowElement = HTMLTableRowElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLContentElement = scope.wrappers.HTMLContentElement;
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
-    var HTMLTemplateElement = scope.wrappers.HTMLTemplateElement;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var OriginalHTMLUnknownElement = window.HTMLUnknownElement;
-    function HTMLUnknownElement(node) {
-      switch (node.localName) {
-       case "content":
-        return new HTMLContentElement(node);
-
-       case "shadow":
-        return new HTMLShadowElement(node);
-
-       case "template":
-        return new HTMLTemplateElement(node);
-      }
-      HTMLElement.call(this, node);
-    }
-    HTMLUnknownElement.prototype = Object.create(HTMLElement.prototype);
-    registerWrapper(OriginalHTMLUnknownElement, HTMLUnknownElement);
-    scope.wrappers.HTMLUnknownElement = HTMLUnknownElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var Element = scope.wrappers.Element;
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var registerObject = scope.registerObject;
-    var SVG_NS = "http://www.w3.org/2000/svg";
-    var svgTitleElement = document.createElementNS(SVG_NS, "title");
-    var SVGTitleElement = registerObject(svgTitleElement);
-    var SVGElement = Object.getPrototypeOf(SVGTitleElement.prototype).constructor;
-    if (!("classList" in svgTitleElement)) {
-      var descr = Object.getOwnPropertyDescriptor(Element.prototype, "classList");
-      Object.defineProperty(HTMLElement.prototype, "classList", descr);
-      delete Element.prototype.classList;
-    }
-    scope.wrappers.SVGElement = SVGElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var OriginalSVGUseElement = window.SVGUseElement;
-    var SVG_NS = "http://www.w3.org/2000/svg";
-    var gWrapper = wrap(document.createElementNS(SVG_NS, "g"));
-    var useElement = document.createElementNS(SVG_NS, "use");
-    var SVGGElement = gWrapper.constructor;
-    var parentInterfacePrototype = Object.getPrototypeOf(SVGGElement.prototype);
-    var parentInterface = parentInterfacePrototype.constructor;
-    function SVGUseElement(impl) {
-      parentInterface.call(this, impl);
-    }
-    SVGUseElement.prototype = Object.create(parentInterfacePrototype);
-    if ("instanceRoot" in useElement) {
-      mixin(SVGUseElement.prototype, {
-        get instanceRoot() {
-          return wrap(unwrap(this).instanceRoot);
-        },
-        get animatedInstanceRoot() {
-          return wrap(unwrap(this).animatedInstanceRoot);
-        }
-      });
-    }
-    registerWrapper(OriginalSVGUseElement, SVGUseElement, useElement);
-    scope.wrappers.SVGUseElement = SVGUseElement;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var EventTarget = scope.wrappers.EventTarget;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var wrap = scope.wrap;
-    var OriginalSVGElementInstance = window.SVGElementInstance;
-    if (!OriginalSVGElementInstance) return;
-    function SVGElementInstance(impl) {
-      EventTarget.call(this, impl);
-    }
-    SVGElementInstance.prototype = Object.create(EventTarget.prototype);
-    mixin(SVGElementInstance.prototype, {
-      get correspondingElement() {
-        return wrap(unsafeUnwrap(this).correspondingElement);
-      },
-      get correspondingUseElement() {
-        return wrap(unsafeUnwrap(this).correspondingUseElement);
-      },
-      get parentNode() {
-        return wrap(unsafeUnwrap(this).parentNode);
-      },
-      get childNodes() {
-        throw new Error("Not implemented");
-      },
-      get firstChild() {
-        return wrap(unsafeUnwrap(this).firstChild);
-      },
-      get lastChild() {
-        return wrap(unsafeUnwrap(this).lastChild);
-      },
-      get previousSibling() {
-        return wrap(unsafeUnwrap(this).previousSibling);
-      },
-      get nextSibling() {
-        return wrap(unsafeUnwrap(this).nextSibling);
-      }
-    });
-    registerWrapper(OriginalSVGElementInstance, SVGElementInstance);
-    scope.wrappers.SVGElementInstance = SVGElementInstance;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var setWrapper = scope.setWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var unwrapIfNeeded = scope.unwrapIfNeeded;
-    var wrap = scope.wrap;
-    var OriginalCanvasRenderingContext2D = window.CanvasRenderingContext2D;
-    function CanvasRenderingContext2D(impl) {
-      setWrapper(impl, this);
-    }
-    mixin(CanvasRenderingContext2D.prototype, {
-      get canvas() {
-        return wrap(unsafeUnwrap(this).canvas);
-      },
-      drawImage: function() {
-        arguments[0] = unwrapIfNeeded(arguments[0]);
-        unsafeUnwrap(this).drawImage.apply(unsafeUnwrap(this), arguments);
-      },
-      createPattern: function() {
-        arguments[0] = unwrap(arguments[0]);
-        return unsafeUnwrap(this).createPattern.apply(unsafeUnwrap(this), arguments);
-      }
-    });
-    registerWrapper(OriginalCanvasRenderingContext2D, CanvasRenderingContext2D, document.createElement("canvas").getContext("2d"));
-    scope.wrappers.CanvasRenderingContext2D = CanvasRenderingContext2D;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var setWrapper = scope.setWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrapIfNeeded = scope.unwrapIfNeeded;
-    var wrap = scope.wrap;
-    var OriginalWebGLRenderingContext = window.WebGLRenderingContext;
-    if (!OriginalWebGLRenderingContext) return;
-    function WebGLRenderingContext(impl) {
-      setWrapper(impl, this);
-    }
-    mixin(WebGLRenderingContext.prototype, {
-      get canvas() {
-        return wrap(unsafeUnwrap(this).canvas);
-      },
-      texImage2D: function() {
-        arguments[5] = unwrapIfNeeded(arguments[5]);
-        unsafeUnwrap(this).texImage2D.apply(unsafeUnwrap(this), arguments);
-      },
-      texSubImage2D: function() {
-        arguments[6] = unwrapIfNeeded(arguments[6]);
-        unsafeUnwrap(this).texSubImage2D.apply(unsafeUnwrap(this), arguments);
-      }
-    });
-    var instanceProperties = /WebKit/.test(navigator.userAgent) ? {
-      drawingBufferHeight: null,
-      drawingBufferWidth: null
-    } : {};
-    registerWrapper(OriginalWebGLRenderingContext, WebGLRenderingContext, instanceProperties);
-    scope.wrappers.WebGLRenderingContext = WebGLRenderingContext;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var registerWrapper = scope.registerWrapper;
-    var setWrapper = scope.setWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var unwrapIfNeeded = scope.unwrapIfNeeded;
-    var wrap = scope.wrap;
-    var OriginalRange = window.Range;
-    function Range(impl) {
-      setWrapper(impl, this);
-    }
-    Range.prototype = {
-      get startContainer() {
-        return wrap(unsafeUnwrap(this).startContainer);
-      },
-      get endContainer() {
-        return wrap(unsafeUnwrap(this).endContainer);
-      },
-      get commonAncestorContainer() {
-        return wrap(unsafeUnwrap(this).commonAncestorContainer);
-      },
-      setStart: function(refNode, offset) {
-        unsafeUnwrap(this).setStart(unwrapIfNeeded(refNode), offset);
-      },
-      setEnd: function(refNode, offset) {
-        unsafeUnwrap(this).setEnd(unwrapIfNeeded(refNode), offset);
-      },
-      setStartBefore: function(refNode) {
-        unsafeUnwrap(this).setStartBefore(unwrapIfNeeded(refNode));
-      },
-      setStartAfter: function(refNode) {
-        unsafeUnwrap(this).setStartAfter(unwrapIfNeeded(refNode));
-      },
-      setEndBefore: function(refNode) {
-        unsafeUnwrap(this).setEndBefore(unwrapIfNeeded(refNode));
-      },
-      setEndAfter: function(refNode) {
-        unsafeUnwrap(this).setEndAfter(unwrapIfNeeded(refNode));
-      },
-      selectNode: function(refNode) {
-        unsafeUnwrap(this).selectNode(unwrapIfNeeded(refNode));
-      },
-      selectNodeContents: function(refNode) {
-        unsafeUnwrap(this).selectNodeContents(unwrapIfNeeded(refNode));
-      },
-      compareBoundaryPoints: function(how, sourceRange) {
-        return unsafeUnwrap(this).compareBoundaryPoints(how, unwrap(sourceRange));
-      },
-      extractContents: function() {
-        return wrap(unsafeUnwrap(this).extractContents());
-      },
-      cloneContents: function() {
-        return wrap(unsafeUnwrap(this).cloneContents());
-      },
-      insertNode: function(node) {
-        unsafeUnwrap(this).insertNode(unwrapIfNeeded(node));
-      },
-      surroundContents: function(newParent) {
-        unsafeUnwrap(this).surroundContents(unwrapIfNeeded(newParent));
-      },
-      cloneRange: function() {
-        return wrap(unsafeUnwrap(this).cloneRange());
-      },
-      isPointInRange: function(node, offset) {
-        return unsafeUnwrap(this).isPointInRange(unwrapIfNeeded(node), offset);
-      },
-      comparePoint: function(node, offset) {
-        return unsafeUnwrap(this).comparePoint(unwrapIfNeeded(node), offset);
-      },
-      intersectsNode: function(node) {
-        return unsafeUnwrap(this).intersectsNode(unwrapIfNeeded(node));
-      },
-      toString: function() {
-        return unsafeUnwrap(this).toString();
-      }
-    };
-    if (OriginalRange.prototype.createContextualFragment) {
-      Range.prototype.createContextualFragment = function(html) {
-        return wrap(unsafeUnwrap(this).createContextualFragment(html));
-      };
-    }
-    registerWrapper(window.Range, Range, document.createRange());
-    scope.wrappers.Range = Range;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var GetElementsByInterface = scope.GetElementsByInterface;
-    var ParentNodeInterface = scope.ParentNodeInterface;
-    var SelectorsInterface = scope.SelectorsInterface;
-    var mixin = scope.mixin;
-    var registerObject = scope.registerObject;
-    var DocumentFragment = registerObject(document.createDocumentFragment());
-    mixin(DocumentFragment.prototype, ParentNodeInterface);
-    mixin(DocumentFragment.prototype, SelectorsInterface);
-    mixin(DocumentFragment.prototype, GetElementsByInterface);
-    var Comment = registerObject(document.createComment(""));
-    scope.wrappers.Comment = Comment;
-    scope.wrappers.DocumentFragment = DocumentFragment;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var DocumentFragment = scope.wrappers.DocumentFragment;
-    var TreeScope = scope.TreeScope;
-    var elementFromPoint = scope.elementFromPoint;
-    var getInnerHTML = scope.getInnerHTML;
-    var getTreeScope = scope.getTreeScope;
-    var mixin = scope.mixin;
-    var rewrap = scope.rewrap;
-    var setInnerHTML = scope.setInnerHTML;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var shadowHostTable = new WeakMap();
-    var nextOlderShadowTreeTable = new WeakMap();
-    var spaceCharRe = /[ \t\n\r\f]/;
-    function ShadowRoot(hostWrapper) {
-      var node = unwrap(unsafeUnwrap(hostWrapper).ownerDocument.createDocumentFragment());
-      DocumentFragment.call(this, node);
-      rewrap(node, this);
-      var oldShadowRoot = hostWrapper.shadowRoot;
-      nextOlderShadowTreeTable.set(this, oldShadowRoot);
-      this.treeScope_ = new TreeScope(this, getTreeScope(oldShadowRoot || hostWrapper));
-      shadowHostTable.set(this, hostWrapper);
-    }
-    ShadowRoot.prototype = Object.create(DocumentFragment.prototype);
-    mixin(ShadowRoot.prototype, {
-      constructor: ShadowRoot,
-      get innerHTML() {
-        return getInnerHTML(this);
-      },
-      set innerHTML(value) {
-        setInnerHTML(this, value);
-        this.invalidateShadowRenderer();
-      },
-      get olderShadowRoot() {
-        return nextOlderShadowTreeTable.get(this) || null;
-      },
-      get host() {
-        return shadowHostTable.get(this) || null;
-      },
-      invalidateShadowRenderer: function() {
-        return shadowHostTable.get(this).invalidateShadowRenderer();
-      },
-      elementFromPoint: function(x, y) {
-        return elementFromPoint(this, this.ownerDocument, x, y);
-      },
-      getElementById: function(id) {
-        if (spaceCharRe.test(id)) return null;
-        return this.querySelector('[id="' + id + '"]');
-      }
-    });
-    scope.wrappers.ShadowRoot = ShadowRoot;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var Element = scope.wrappers.Element;
-    var HTMLContentElement = scope.wrappers.HTMLContentElement;
-    var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
-    var Node = scope.wrappers.Node;
-    var ShadowRoot = scope.wrappers.ShadowRoot;
-    var assert = scope.assert;
-    var getTreeScope = scope.getTreeScope;
-    var mixin = scope.mixin;
-    var oneOf = scope.oneOf;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var ArraySplice = scope.ArraySplice;
-    function updateWrapperUpAndSideways(wrapper) {
-      wrapper.previousSibling_ = wrapper.previousSibling;
-      wrapper.nextSibling_ = wrapper.nextSibling;
-      wrapper.parentNode_ = wrapper.parentNode;
-    }
-    function updateWrapperDown(wrapper) {
-      wrapper.firstChild_ = wrapper.firstChild;
-      wrapper.lastChild_ = wrapper.lastChild;
-    }
-    function updateAllChildNodes(parentNodeWrapper) {
-      assert(parentNodeWrapper instanceof Node);
-      for (var childWrapper = parentNodeWrapper.firstChild; childWrapper; childWrapper = childWrapper.nextSibling) {
-        updateWrapperUpAndSideways(childWrapper);
-      }
-      updateWrapperDown(parentNodeWrapper);
-    }
-    function insertBefore(parentNodeWrapper, newChildWrapper, refChildWrapper) {
-      var parentNode = unwrap(parentNodeWrapper);
-      var newChild = unwrap(newChildWrapper);
-      var refChild = refChildWrapper ? unwrap(refChildWrapper) : null;
-      remove(newChildWrapper);
-      updateWrapperUpAndSideways(newChildWrapper);
-      if (!refChildWrapper) {
-        parentNodeWrapper.lastChild_ = parentNodeWrapper.lastChild;
-        if (parentNodeWrapper.lastChild === parentNodeWrapper.firstChild) parentNodeWrapper.firstChild_ = parentNodeWrapper.firstChild;
-        var lastChildWrapper = wrap(parentNode.lastChild);
-        if (lastChildWrapper) lastChildWrapper.nextSibling_ = lastChildWrapper.nextSibling;
-      } else {
-        if (parentNodeWrapper.firstChild === refChildWrapper) parentNodeWrapper.firstChild_ = refChildWrapper;
-        refChildWrapper.previousSibling_ = refChildWrapper.previousSibling;
-      }
-      scope.originalInsertBefore.call(parentNode, newChild, refChild);
-    }
-    function remove(nodeWrapper) {
-      var node = unwrap(nodeWrapper);
-      var parentNode = node.parentNode;
-      if (!parentNode) return;
-      var parentNodeWrapper = wrap(parentNode);
-      updateWrapperUpAndSideways(nodeWrapper);
-      if (nodeWrapper.previousSibling) nodeWrapper.previousSibling.nextSibling_ = nodeWrapper;
-      if (nodeWrapper.nextSibling) nodeWrapper.nextSibling.previousSibling_ = nodeWrapper;
-      if (parentNodeWrapper.lastChild === nodeWrapper) parentNodeWrapper.lastChild_ = nodeWrapper;
-      if (parentNodeWrapper.firstChild === nodeWrapper) parentNodeWrapper.firstChild_ = nodeWrapper;
-      scope.originalRemoveChild.call(parentNode, node);
-    }
-    var distributedNodesTable = new WeakMap();
-    var destinationInsertionPointsTable = new WeakMap();
-    var rendererForHostTable = new WeakMap();
-    function resetDistributedNodes(insertionPoint) {
-      distributedNodesTable.set(insertionPoint, []);
-    }
-    function getDistributedNodes(insertionPoint) {
-      var rv = distributedNodesTable.get(insertionPoint);
-      if (!rv) distributedNodesTable.set(insertionPoint, rv = []);
-      return rv;
-    }
-    function getChildNodesSnapshot(node) {
-      var result = [], i = 0;
-      for (var child = node.firstChild; child; child = child.nextSibling) {
-        result[i++] = child;
-      }
-      return result;
-    }
-    var request = oneOf(window, [ "requestAnimationFrame", "mozRequestAnimationFrame", "webkitRequestAnimationFrame", "setTimeout" ]);
-    var pendingDirtyRenderers = [];
-    var renderTimer;
-    function renderAllPending() {
-      for (var i = 0; i < pendingDirtyRenderers.length; i++) {
-        var renderer = pendingDirtyRenderers[i];
-        var parentRenderer = renderer.parentRenderer;
-        if (parentRenderer && parentRenderer.dirty) continue;
-        renderer.render();
-      }
-      pendingDirtyRenderers = [];
-    }
-    function handleRequestAnimationFrame() {
-      renderTimer = null;
-      renderAllPending();
-    }
-    function getRendererForHost(host) {
-      var renderer = rendererForHostTable.get(host);
-      if (!renderer) {
-        renderer = new ShadowRenderer(host);
-        rendererForHostTable.set(host, renderer);
-      }
-      return renderer;
-    }
-    function getShadowRootAncestor(node) {
-      var root = getTreeScope(node).root;
-      if (root instanceof ShadowRoot) return root;
-      return null;
-    }
-    function getRendererForShadowRoot(shadowRoot) {
-      return getRendererForHost(shadowRoot.host);
-    }
-    var spliceDiff = new ArraySplice();
-    spliceDiff.equals = function(renderNode, rawNode) {
-      return unwrap(renderNode.node) === rawNode;
-    };
-    function RenderNode(node) {
-      this.skip = false;
-      this.node = node;
-      this.childNodes = [];
-    }
-    RenderNode.prototype = {
-      append: function(node) {
-        var rv = new RenderNode(node);
-        this.childNodes.push(rv);
-        return rv;
-      },
-      sync: function(opt_added) {
-        if (this.skip) return;
-        var nodeWrapper = this.node;
-        var newChildren = this.childNodes;
-        var oldChildren = getChildNodesSnapshot(unwrap(nodeWrapper));
-        var added = opt_added || new WeakMap();
-        var splices = spliceDiff.calculateSplices(newChildren, oldChildren);
-        var newIndex = 0, oldIndex = 0;
-        var lastIndex = 0;
-        for (var i = 0; i < splices.length; i++) {
-          var splice = splices[i];
-          for (;lastIndex < splice.index; lastIndex++) {
-            oldIndex++;
-            newChildren[newIndex++].sync(added);
-          }
-          var removedCount = splice.removed.length;
-          for (var j = 0; j < removedCount; j++) {
-            var wrapper = wrap(oldChildren[oldIndex++]);
-            if (!added.get(wrapper)) remove(wrapper);
-          }
-          var addedCount = splice.addedCount;
-          var refNode = oldChildren[oldIndex] && wrap(oldChildren[oldIndex]);
-          for (var j = 0; j < addedCount; j++) {
-            var newChildRenderNode = newChildren[newIndex++];
-            var newChildWrapper = newChildRenderNode.node;
-            insertBefore(nodeWrapper, newChildWrapper, refNode);
-            added.set(newChildWrapper, true);
-            newChildRenderNode.sync(added);
-          }
-          lastIndex += addedCount;
-        }
-        for (var i = lastIndex; i < newChildren.length; i++) {
-          newChildren[i].sync(added);
-        }
-      }
-    };
-    function ShadowRenderer(host) {
-      this.host = host;
-      this.dirty = false;
-      this.invalidateAttributes();
-      this.associateNode(host);
-    }
-    ShadowRenderer.prototype = {
-      render: function(opt_renderNode) {
-        if (!this.dirty) return;
-        this.invalidateAttributes();
-        var host = this.host;
-        this.distribution(host);
-        var renderNode = opt_renderNode || new RenderNode(host);
-        this.buildRenderTree(renderNode, host);
-        var topMostRenderer = !opt_renderNode;
-        if (topMostRenderer) renderNode.sync();
-        this.dirty = false;
-      },
-      get parentRenderer() {
-        return getTreeScope(this.host).renderer;
-      },
-      invalidate: function() {
-        if (!this.dirty) {
-          this.dirty = true;
-          var parentRenderer = this.parentRenderer;
-          if (parentRenderer) parentRenderer.invalidate();
-          pendingDirtyRenderers.push(this);
-          if (renderTimer) return;
-          renderTimer = window[request](handleRequestAnimationFrame, 0);
-        }
-      },
-      distribution: function(root) {
-        this.resetAllSubtrees(root);
-        this.distributionResolution(root);
-      },
-      resetAll: function(node) {
-        if (isInsertionPoint(node)) resetDistributedNodes(node); else resetDestinationInsertionPoints(node);
-        this.resetAllSubtrees(node);
-      },
-      resetAllSubtrees: function(node) {
-        for (var child = node.firstChild; child; child = child.nextSibling) {
-          this.resetAll(child);
-        }
-        if (node.shadowRoot) this.resetAll(node.shadowRoot);
-        if (node.olderShadowRoot) this.resetAll(node.olderShadowRoot);
-      },
-      distributionResolution: function(node) {
-        if (isShadowHost(node)) {
-          var shadowHost = node;
-          var pool = poolPopulation(shadowHost);
-          var shadowTrees = getShadowTrees(shadowHost);
-          for (var i = 0; i < shadowTrees.length; i++) {
-            this.poolDistribution(shadowTrees[i], pool);
-          }
-          for (var i = shadowTrees.length - 1; i >= 0; i--) {
-            var shadowTree = shadowTrees[i];
-            var shadow = getShadowInsertionPoint(shadowTree);
-            if (shadow) {
-              var olderShadowRoot = shadowTree.olderShadowRoot;
-              if (olderShadowRoot) {
-                pool = poolPopulation(olderShadowRoot);
-              }
-              for (var j = 0; j < pool.length; j++) {
-                destributeNodeInto(pool[j], shadow);
-              }
-            }
-            this.distributionResolution(shadowTree);
-          }
-        }
-        for (var child = node.firstChild; child; child = child.nextSibling) {
-          this.distributionResolution(child);
-        }
-      },
-      poolDistribution: function(node, pool) {
-        if (node instanceof HTMLShadowElement) return;
-        if (node instanceof HTMLContentElement) {
-          var content = node;
-          this.updateDependentAttributes(content.getAttribute("select"));
-          var anyDistributed = false;
-          for (var i = 0; i < pool.length; i++) {
-            var node = pool[i];
-            if (!node) continue;
-            if (matches(node, content)) {
-              destributeNodeInto(node, content);
-              pool[i] = undefined;
-              anyDistributed = true;
-            }
-          }
-          if (!anyDistributed) {
-            for (var child = content.firstChild; child; child = child.nextSibling) {
-              destributeNodeInto(child, content);
-            }
-          }
-          return;
-        }
-        for (var child = node.firstChild; child; child = child.nextSibling) {
-          this.poolDistribution(child, pool);
-        }
-      },
-      buildRenderTree: function(renderNode, node) {
-        var children = this.compose(node);
-        for (var i = 0; i < children.length; i++) {
-          var child = children[i];
-          var childRenderNode = renderNode.append(child);
-          this.buildRenderTree(childRenderNode, child);
-        }
-        if (isShadowHost(node)) {
-          var renderer = getRendererForHost(node);
-          renderer.dirty = false;
-        }
-      },
-      compose: function(node) {
-        var children = [];
-        var p = node.shadowRoot || node;
-        for (var child = p.firstChild; child; child = child.nextSibling) {
-          if (isInsertionPoint(child)) {
-            this.associateNode(p);
-            var distributedNodes = getDistributedNodes(child);
-            for (var j = 0; j < distributedNodes.length; j++) {
-              var distributedNode = distributedNodes[j];
-              if (isFinalDestination(child, distributedNode)) children.push(distributedNode);
-            }
-          } else {
-            children.push(child);
-          }
-        }
-        return children;
-      },
-      invalidateAttributes: function() {
-        this.attributes = Object.create(null);
-      },
-      updateDependentAttributes: function(selector) {
-        if (!selector) return;
-        var attributes = this.attributes;
-        if (/\.\w+/.test(selector)) attributes["class"] = true;
-        if (/#\w+/.test(selector)) attributes["id"] = true;
-        selector.replace(/\[\s*([^\s=\|~\]]+)/g, function(_, name) {
-          attributes[name] = true;
-        });
-      },
-      dependsOnAttribute: function(name) {
-        return this.attributes[name];
-      },
-      associateNode: function(node) {
-        unsafeUnwrap(node).polymerShadowRenderer_ = this;
-      }
-    };
-    function poolPopulation(node) {
-      var pool = [];
-      for (var child = node.firstChild; child; child = child.nextSibling) {
-        if (isInsertionPoint(child)) {
-          pool.push.apply(pool, getDistributedNodes(child));
-        } else {
-          pool.push(child);
-        }
-      }
-      return pool;
-    }
-    function getShadowInsertionPoint(node) {
-      if (node instanceof HTMLShadowElement) return node;
-      if (node instanceof HTMLContentElement) return null;
-      for (var child = node.firstChild; child; child = child.nextSibling) {
-        var res = getShadowInsertionPoint(child);
-        if (res) return res;
-      }
-      return null;
-    }
-    function destributeNodeInto(child, insertionPoint) {
-      getDistributedNodes(insertionPoint).push(child);
-      var points = destinationInsertionPointsTable.get(child);
-      if (!points) destinationInsertionPointsTable.set(child, [ insertionPoint ]); else points.push(insertionPoint);
-    }
-    function getDestinationInsertionPoints(node) {
-      return destinationInsertionPointsTable.get(node);
-    }
-    function resetDestinationInsertionPoints(node) {
-      destinationInsertionPointsTable.set(node, undefined);
-    }
-    var selectorStartCharRe = /^(:not\()?[*.#[a-zA-Z_|]/;
-    function matches(node, contentElement) {
-      var select = contentElement.getAttribute("select");
-      if (!select) return true;
-      select = select.trim();
-      if (!select) return true;
-      if (!(node instanceof Element)) return false;
-      if (!selectorStartCharRe.test(select)) return false;
-      try {
-        return node.matches(select);
-      } catch (ex) {
-        return false;
-      }
-    }
-    function isFinalDestination(insertionPoint, node) {
-      var points = getDestinationInsertionPoints(node);
-      return points && points[points.length - 1] === insertionPoint;
-    }
-    function isInsertionPoint(node) {
-      return node instanceof HTMLContentElement || node instanceof HTMLShadowElement;
-    }
-    function isShadowHost(shadowHost) {
-      return shadowHost.shadowRoot;
-    }
-    function getShadowTrees(host) {
-      var trees = [];
-      for (var tree = host.shadowRoot; tree; tree = tree.olderShadowRoot) {
-        trees.push(tree);
-      }
-      return trees;
-    }
-    function render(host) {
-      new ShadowRenderer(host).render();
-    }
-    Node.prototype.invalidateShadowRenderer = function(force) {
-      var renderer = unsafeUnwrap(this).polymerShadowRenderer_;
-      if (renderer) {
-        renderer.invalidate();
-        return true;
-      }
-      return false;
-    };
-    HTMLContentElement.prototype.getDistributedNodes = HTMLShadowElement.prototype.getDistributedNodes = function() {
-      renderAllPending();
-      return getDistributedNodes(this);
-    };
-    Element.prototype.getDestinationInsertionPoints = function() {
-      renderAllPending();
-      return getDestinationInsertionPoints(this) || [];
-    };
-    HTMLContentElement.prototype.nodeIsInserted_ = HTMLShadowElement.prototype.nodeIsInserted_ = function() {
-      this.invalidateShadowRenderer();
-      var shadowRoot = getShadowRootAncestor(this);
-      var renderer;
-      if (shadowRoot) renderer = getRendererForShadowRoot(shadowRoot);
-      unsafeUnwrap(this).polymerShadowRenderer_ = renderer;
-      if (renderer) renderer.invalidate();
-    };
-    scope.getRendererForHost = getRendererForHost;
-    scope.getShadowTrees = getShadowTrees;
-    scope.renderAllPending = renderAllPending;
-    scope.getDestinationInsertionPoints = getDestinationInsertionPoints;
-    scope.visual = {
-      insertBefore: insertBefore,
-      remove: remove
-    };
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var HTMLElement = scope.wrappers.HTMLElement;
-    var assert = scope.assert;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var elementsWithFormProperty = [ "HTMLButtonElement", "HTMLFieldSetElement", "HTMLInputElement", "HTMLKeygenElement", "HTMLLabelElement", "HTMLLegendElement", "HTMLObjectElement", "HTMLOutputElement", "HTMLTextAreaElement" ];
-    function createWrapperConstructor(name) {
-      if (!window[name]) return;
-      assert(!scope.wrappers[name]);
-      var GeneratedWrapper = function(node) {
-        HTMLElement.call(this, node);
-      };
-      GeneratedWrapper.prototype = Object.create(HTMLElement.prototype);
-      mixin(GeneratedWrapper.prototype, {
-        get form() {
-          return wrap(unwrap(this).form);
-        }
-      });
-      registerWrapper(window[name], GeneratedWrapper, document.createElement(name.slice(4, -7)));
-      scope.wrappers[name] = GeneratedWrapper;
-    }
-    elementsWithFormProperty.forEach(createWrapperConstructor);
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var registerWrapper = scope.registerWrapper;
-    var setWrapper = scope.setWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var unwrapIfNeeded = scope.unwrapIfNeeded;
-    var wrap = scope.wrap;
-    var OriginalSelection = window.Selection;
-    function Selection(impl) {
-      setWrapper(impl, this);
-    }
-    Selection.prototype = {
-      get anchorNode() {
-        return wrap(unsafeUnwrap(this).anchorNode);
-      },
-      get focusNode() {
-        return wrap(unsafeUnwrap(this).focusNode);
-      },
-      addRange: function(range) {
-        unsafeUnwrap(this).addRange(unwrap(range));
-      },
-      collapse: function(node, index) {
-        unsafeUnwrap(this).collapse(unwrapIfNeeded(node), index);
-      },
-      containsNode: function(node, allowPartial) {
-        return unsafeUnwrap(this).containsNode(unwrapIfNeeded(node), allowPartial);
-      },
-      extend: function(node, offset) {
-        unsafeUnwrap(this).extend(unwrapIfNeeded(node), offset);
-      },
-      getRangeAt: function(index) {
-        return wrap(unsafeUnwrap(this).getRangeAt(index));
-      },
-      removeRange: function(range) {
-        unsafeUnwrap(this).removeRange(unwrap(range));
-      },
-      selectAllChildren: function(node) {
-        unsafeUnwrap(this).selectAllChildren(unwrapIfNeeded(node));
-      },
-      toString: function() {
-        return unsafeUnwrap(this).toString();
-      }
-    };
-    registerWrapper(window.Selection, Selection, window.getSelection());
-    scope.wrappers.Selection = Selection;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var GetElementsByInterface = scope.GetElementsByInterface;
-    var Node = scope.wrappers.Node;
-    var ParentNodeInterface = scope.ParentNodeInterface;
-    var Selection = scope.wrappers.Selection;
-    var SelectorsInterface = scope.SelectorsInterface;
-    var ShadowRoot = scope.wrappers.ShadowRoot;
-    var TreeScope = scope.TreeScope;
-    var cloneNode = scope.cloneNode;
-    var defineWrapGetter = scope.defineWrapGetter;
-    var elementFromPoint = scope.elementFromPoint;
-    var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
-    var matchesNames = scope.matchesNames;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var renderAllPending = scope.renderAllPending;
-    var rewrap = scope.rewrap;
-    var setWrapper = scope.setWrapper;
-    var unsafeUnwrap = scope.unsafeUnwrap;
-    var unwrap = scope.unwrap;
-    var wrap = scope.wrap;
-    var wrapEventTargetMethods = scope.wrapEventTargetMethods;
-    var wrapNodeList = scope.wrapNodeList;
-    var implementationTable = new WeakMap();
-    function Document(node) {
-      Node.call(this, node);
-      this.treeScope_ = new TreeScope(this, null);
-    }
-    Document.prototype = Object.create(Node.prototype);
-    defineWrapGetter(Document, "documentElement");
-    defineWrapGetter(Document, "body");
-    defineWrapGetter(Document, "head");
-    function wrapMethod(name) {
-      var original = document[name];
-      Document.prototype[name] = function() {
-        return wrap(original.apply(unsafeUnwrap(this), arguments));
-      };
-    }
-    [ "createComment", "createDocumentFragment", "createElement", "createElementNS", "createEvent", "createEventNS", "createRange", "createTextNode", "getElementById" ].forEach(wrapMethod);
-    var originalAdoptNode = document.adoptNode;
-    function adoptNodeNoRemove(node, doc) {
-      originalAdoptNode.call(unsafeUnwrap(doc), unwrap(node));
-      adoptSubtree(node, doc);
-    }
-    function adoptSubtree(node, doc) {
-      if (node.shadowRoot) doc.adoptNode(node.shadowRoot);
-      if (node instanceof ShadowRoot) adoptOlderShadowRoots(node, doc);
-      for (var child = node.firstChild; child; child = child.nextSibling) {
-        adoptSubtree(child, doc);
-      }
-    }
-    function adoptOlderShadowRoots(shadowRoot, doc) {
-      var oldShadowRoot = shadowRoot.olderShadowRoot;
-      if (oldShadowRoot) doc.adoptNode(oldShadowRoot);
-    }
-    var originalGetSelection = document.getSelection;
-    mixin(Document.prototype, {
-      adoptNode: function(node) {
-        if (node.parentNode) node.parentNode.removeChild(node);
-        adoptNodeNoRemove(node, this);
-        return node;
-      },
-      elementFromPoint: function(x, y) {
-        return elementFromPoint(this, this, x, y);
-      },
-      importNode: function(node, deep) {
-        return cloneNode(node, deep, unsafeUnwrap(this));
-      },
-      getSelection: function() {
-        renderAllPending();
-        return new Selection(originalGetSelection.call(unwrap(this)));
-      },
-      getElementsByName: function(name) {
-        return SelectorsInterface.querySelectorAll.call(this, "[name=" + JSON.stringify(String(name)) + "]");
-      }
-    });
-    if (document.registerElement) {
-      var originalRegisterElement = document.registerElement;
-      Document.prototype.registerElement = function(tagName, object) {
-        var prototype, extendsOption;
-        if (object !== undefined) {
-          prototype = object.prototype;
-          extendsOption = object.extends;
-        }
-        if (!prototype) prototype = Object.create(HTMLElement.prototype);
-        if (scope.nativePrototypeTable.get(prototype)) {
-          throw new Error("NotSupportedError");
-        }
-        var proto = Object.getPrototypeOf(prototype);
-        var nativePrototype;
-        var prototypes = [];
-        while (proto) {
-          nativePrototype = scope.nativePrototypeTable.get(proto);
-          if (nativePrototype) break;
-          prototypes.push(proto);
-          proto = Object.getPrototypeOf(proto);
-        }
-        if (!nativePrototype) {
-          throw new Error("NotSupportedError");
-        }
-        var newPrototype = Object.create(nativePrototype);
-        for (var i = prototypes.length - 1; i >= 0; i--) {
-          newPrototype = Object.create(newPrototype);
-        }
-        [ "createdCallback", "attachedCallback", "detachedCallback", "attributeChangedCallback" ].forEach(function(name) {
-          var f = prototype[name];
-          if (!f) return;
-          newPrototype[name] = function() {
-            if (!(wrap(this) instanceof CustomElementConstructor)) {
-              rewrap(this);
-            }
-            f.apply(wrap(this), arguments);
-          };
-        });
-        var p = {
-          prototype: newPrototype
-        };
-        if (extendsOption) p.extends = extendsOption;
-        function CustomElementConstructor(node) {
-          if (!node) {
-            if (extendsOption) {
-              return document.createElement(extendsOption, tagName);
-            } else {
-              return document.createElement(tagName);
-            }
-          }
-          setWrapper(node, this);
-        }
-        CustomElementConstructor.prototype = prototype;
-        CustomElementConstructor.prototype.constructor = CustomElementConstructor;
-        scope.constructorTable.set(newPrototype, CustomElementConstructor);
-        scope.nativePrototypeTable.set(prototype, newPrototype);
-        var nativeConstructor = originalRegisterElement.call(unwrap(this), tagName, p);
-        return CustomElementConstructor;
-      };
-      forwardMethodsToWrapper([ window.HTMLDocument || window.Document ], [ "registerElement" ]);
-    }
-    forwardMethodsToWrapper([ window.HTMLBodyElement, window.HTMLDocument || window.Document, window.HTMLHeadElement, window.HTMLHtmlElement ], [ "appendChild", "compareDocumentPosition", "contains", "getElementsByClassName", "getElementsByTagName", "getElementsByTagNameNS", "insertBefore", "querySelector", "querySelectorAll", "removeChild", "replaceChild" ].concat(matchesNames));
-    forwardMethodsToWrapper([ window.HTMLDocument || window.Document ], [ "adoptNode", "importNode", "contains", "createComment", "createDocumentFragment", "createElement", "createElementNS", "createEvent", "createEventNS", "createRange", "createTextNode", "elementFromPoint", "getElementById", "getElementsByName", "getSelection" ]);
-    mixin(Document.prototype, GetElementsByInterface);
-    mixin(Document.prototype, ParentNodeInterface);
-    mixin(Document.prototype, SelectorsInterface);
-    mixin(Document.prototype, {
-      get implementation() {
-        var implementation = implementationTable.get(this);
-        if (implementation) return implementation;
-        implementation = new DOMImplementation(unwrap(this).implementation);
-        implementationTable.set(this, implementation);
-        return implementation;
-      },
-      get defaultView() {
-        return wrap(unwrap(this).defaultView);
-      }
-    });
-    registerWrapper(window.Document, Document, document.implementation.createHTMLDocument(""));
-    if (window.HTMLDocument) registerWrapper(window.HTMLDocument, Document);
-    wrapEventTargetMethods([ window.HTMLBodyElement, window.HTMLDocument || window.Document, window.HTMLHeadElement ]);
-    function DOMImplementation(impl) {
-      setWrapper(impl, this);
-    }
-    function wrapImplMethod(constructor, name) {
-      var original = document.implementation[name];
-      constructor.prototype[name] = function() {
-        return wrap(original.apply(unsafeUnwrap(this), arguments));
-      };
-    }
-    function forwardImplMethod(constructor, name) {
-      var original = document.implementation[name];
-      constructor.prototype[name] = function() {
-        return original.apply(unsafeUnwrap(this), arguments);
-      };
-    }
-    wrapImplMethod(DOMImplementation, "createDocumentType");
-    wrapImplMethod(DOMImplementation, "createDocument");
-    wrapImplMethod(DOMImplementation, "createHTMLDocument");
-    forwardImplMethod(DOMImplementation, "hasFeature");
-    registerWrapper(window.DOMImplementation, DOMImplementation);
-    forwardMethodsToWrapper([ window.DOMImplementation ], [ "createDocumentType", "createDocument", "createHTMLDocument", "hasFeature" ]);
-    scope.adoptNodeNoRemove = adoptNodeNoRemove;
-    scope.wrappers.DOMImplementation = DOMImplementation;
-    scope.wrappers.Document = Document;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var EventTarget = scope.wrappers.EventTarget;
-    var Selection = scope.wrappers.Selection;
-    var mixin = scope.mixin;
-    var registerWrapper = scope.registerWrapper;
-    var renderAllPending = scope.renderAllPending;
-    var unwrap = scope.unwrap;
-    var unwrapIfNeeded = scope.unwrapIfNeeded;
-    var wrap = scope.wrap;
-    var OriginalWindow = window.Window;
-    var originalGetComputedStyle = window.getComputedStyle;
-    var originalGetDefaultComputedStyle = window.getDefaultComputedStyle;
-    var originalGetSelection = window.getSelection;
-    function Window(impl) {
-      EventTarget.call(this, impl);
-    }
-    Window.prototype = Object.create(EventTarget.prototype);
-    OriginalWindow.prototype.getComputedStyle = function(el, pseudo) {
-      return wrap(this || window).getComputedStyle(unwrapIfNeeded(el), pseudo);
-    };
-    if (originalGetDefaultComputedStyle) {
-      OriginalWindow.prototype.getDefaultComputedStyle = function(el, pseudo) {
-        return wrap(this || window).getDefaultComputedStyle(unwrapIfNeeded(el), pseudo);
-      };
-    }
-    OriginalWindow.prototype.getSelection = function() {
-      return wrap(this || window).getSelection();
-    };
-    delete window.getComputedStyle;
-    delete window.getDefaultComputedStyle;
-    delete window.getSelection;
-    [ "addEventListener", "removeEventListener", "dispatchEvent" ].forEach(function(name) {
-      OriginalWindow.prototype[name] = function() {
-        var w = wrap(this || window);
-        return w[name].apply(w, arguments);
-      };
-      delete window[name];
-    });
-    mixin(Window.prototype, {
-      getComputedStyle: function(el, pseudo) {
-        renderAllPending();
-        return originalGetComputedStyle.call(unwrap(this), unwrapIfNeeded(el), pseudo);
-      },
-      getSelection: function() {
-        renderAllPending();
-        return new Selection(originalGetSelection.call(unwrap(this)));
-      },
-      get document() {
-        return wrap(unwrap(this).document);
-      }
-    });
-    if (originalGetDefaultComputedStyle) {
-      Window.prototype.getDefaultComputedStyle = function(el, pseudo) {
-        renderAllPending();
-        return originalGetDefaultComputedStyle.call(unwrap(this), unwrapIfNeeded(el), pseudo);
-      };
-    }
-    registerWrapper(OriginalWindow, Window, window);
-    scope.wrappers.Window = Window;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var unwrap = scope.unwrap;
-    var OriginalDataTransfer = window.DataTransfer || window.Clipboard;
-    var OriginalDataTransferSetDragImage = OriginalDataTransfer.prototype.setDragImage;
-    if (OriginalDataTransferSetDragImage) {
-      OriginalDataTransfer.prototype.setDragImage = function(image, x, y) {
-        OriginalDataTransferSetDragImage.call(this, unwrap(image), x, y);
-      };
-    }
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var registerWrapper = scope.registerWrapper;
-    var setWrapper = scope.setWrapper;
-    var unwrap = scope.unwrap;
-    var OriginalFormData = window.FormData;
-    if (!OriginalFormData) return;
-    function FormData(formElement) {
-      var impl;
-      if (formElement instanceof OriginalFormData) {
-        impl = formElement;
-      } else {
-        impl = new OriginalFormData(formElement && unwrap(formElement));
-      }
-      setWrapper(impl, this);
-    }
-    registerWrapper(OriginalFormData, FormData, new OriginalFormData());
-    scope.wrappers.FormData = FormData;
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var unwrapIfNeeded = scope.unwrapIfNeeded;
-    var originalSend = XMLHttpRequest.prototype.send;
-    XMLHttpRequest.prototype.send = function(obj) {
-      return originalSend.call(this, unwrapIfNeeded(obj));
-    };
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    "use strict";
-    var isWrapperFor = scope.isWrapperFor;
-    var elements = {
-      a: "HTMLAnchorElement",
-      area: "HTMLAreaElement",
-      audio: "HTMLAudioElement",
-      base: "HTMLBaseElement",
-      body: "HTMLBodyElement",
-      br: "HTMLBRElement",
-      button: "HTMLButtonElement",
-      canvas: "HTMLCanvasElement",
-      caption: "HTMLTableCaptionElement",
-      col: "HTMLTableColElement",
-      content: "HTMLContentElement",
-      data: "HTMLDataElement",
-      datalist: "HTMLDataListElement",
-      del: "HTMLModElement",
-      dir: "HTMLDirectoryElement",
-      div: "HTMLDivElement",
-      dl: "HTMLDListElement",
-      embed: "HTMLEmbedElement",
-      fieldset: "HTMLFieldSetElement",
-      font: "HTMLFontElement",
-      form: "HTMLFormElement",
-      frame: "HTMLFrameElement",
-      frameset: "HTMLFrameSetElement",
-      h1: "HTMLHeadingElement",
-      head: "HTMLHeadElement",
-      hr: "HTMLHRElement",
-      html: "HTMLHtmlElement",
-      iframe: "HTMLIFrameElement",
-      img: "HTMLImageElement",
-      input: "HTMLInputElement",
-      keygen: "HTMLKeygenElement",
-      label: "HTMLLabelElement",
-      legend: "HTMLLegendElement",
-      li: "HTMLLIElement",
-      link: "HTMLLinkElement",
-      map: "HTMLMapElement",
-      marquee: "HTMLMarqueeElement",
-      menu: "HTMLMenuElement",
-      menuitem: "HTMLMenuItemElement",
-      meta: "HTMLMetaElement",
-      meter: "HTMLMeterElement",
-      object: "HTMLObjectElement",
-      ol: "HTMLOListElement",
-      optgroup: "HTMLOptGroupElement",
-      option: "HTMLOptionElement",
-      output: "HTMLOutputElement",
-      p: "HTMLParagraphElement",
-      param: "HTMLParamElement",
-      pre: "HTMLPreElement",
-      progress: "HTMLProgressElement",
-      q: "HTMLQuoteElement",
-      script: "HTMLScriptElement",
-      select: "HTMLSelectElement",
-      shadow: "HTMLShadowElement",
-      source: "HTMLSourceElement",
-      span: "HTMLSpanElement",
-      style: "HTMLStyleElement",
-      table: "HTMLTableElement",
-      tbody: "HTMLTableSectionElement",
-      template: "HTMLTemplateElement",
-      textarea: "HTMLTextAreaElement",
-      thead: "HTMLTableSectionElement",
-      time: "HTMLTimeElement",
-      title: "HTMLTitleElement",
-      tr: "HTMLTableRowElement",
-      track: "HTMLTrackElement",
-      ul: "HTMLUListElement",
-      video: "HTMLVideoElement"
-    };
-    function overrideConstructor(tagName) {
-      var nativeConstructorName = elements[tagName];
-      var nativeConstructor = window[nativeConstructorName];
-      if (!nativeConstructor) return;
-      var element = document.createElement(tagName);
-      var wrapperConstructor = element.constructor;
-      window[nativeConstructorName] = wrapperConstructor;
-    }
-    Object.keys(elements).forEach(overrideConstructor);
-    Object.getOwnPropertyNames(scope.wrappers).forEach(function(name) {
-      window[name] = scope.wrappers[name];
-    });
-  })(window.ShadowDOMPolyfill);
-  (function(scope) {
-    var ShadowCSS = {
-      strictStyling: false,
-      registry: {},
-      shimStyling: function(root, name, extendsName) {
-        var scopeStyles = this.prepareRoot(root, name, extendsName);
-        var typeExtension = this.isTypeExtension(extendsName);
-        var scopeSelector = this.makeScopeSelector(name, typeExtension);
-        var cssText = stylesToCssText(scopeStyles, true);
-        cssText = this.scopeCssText(cssText, scopeSelector);
-        if (root) {
-          root.shimmedStyle = cssText;
-        }
-        this.addCssToDocument(cssText, name);
-      },
-      shimStyle: function(style, selector) {
-        return this.shimCssText(style.textContent, selector);
-      },
-      shimCssText: function(cssText, selector) {
-        cssText = this.insertDirectives(cssText);
-        return this.scopeCssText(cssText, selector);
-      },
-      makeScopeSelector: function(name, typeExtension) {
-        if (name) {
-          return typeExtension ? "[is=" + name + "]" : name;
-        }
-        return "";
-      },
-      isTypeExtension: function(extendsName) {
-        return extendsName && extendsName.indexOf("-") < 0;
-      },
-      prepareRoot: function(root, name, extendsName) {
-        var def = this.registerRoot(root, name, extendsName);
-        this.replaceTextInStyles(def.rootStyles, this.insertDirectives);
-        this.removeStyles(root, def.rootStyles);
-        if (this.strictStyling) {
-          this.applyScopeToContent(root, name);
-        }
-        return def.scopeStyles;
-      },
-      removeStyles: function(root, styles) {
-        for (var i = 0, l = styles.length, s; i < l && (s = styles[i]); i++) {
-          s.parentNode.removeChild(s);
-        }
-      },
-      registerRoot: function(root, name, extendsName) {
-        var def = this.registry[name] = {
-          root: root,
-          name: name,
-          extendsName: extendsName
-        };
-        var styles = this.findStyles(root);
-        def.rootStyles = styles;
-        def.scopeStyles = def.rootStyles;
-        var extendee = this.registry[def.extendsName];
-        if (extendee) {
-          def.scopeStyles = extendee.scopeStyles.concat(def.scopeStyles);
-        }
-        return def;
-      },
-      findStyles: function(root) {
-        if (!root) {
-          return [];
-        }
-        var styles = root.querySelectorAll("style");
-        return Array.prototype.filter.call(styles, function(s) {
-          return !s.hasAttribute(NO_SHIM_ATTRIBUTE);
-        });
-      },
-      applyScopeToContent: function(root, name) {
-        if (root) {
-          Array.prototype.forEach.call(root.querySelectorAll("*"), function(node) {
-            node.setAttribute(name, "");
-          });
-          Array.prototype.forEach.call(root.querySelectorAll("template"), function(template) {
-            this.applyScopeToContent(template.content, name);
-          }, this);
-        }
-      },
-      insertDirectives: function(cssText) {
-        cssText = this.insertPolyfillDirectivesInCssText(cssText);
-        return this.insertPolyfillRulesInCssText(cssText);
-      },
-      insertPolyfillDirectivesInCssText: function(cssText) {
-        cssText = cssText.replace(cssCommentNextSelectorRe, function(match, p1) {
-          return p1.slice(0, -2) + "{";
-        });
-        return cssText.replace(cssContentNextSelectorRe, function(match, p1) {
-          return p1 + " {";
-        });
-      },
-      insertPolyfillRulesInCssText: function(cssText) {
-        cssText = cssText.replace(cssCommentRuleRe, function(match, p1) {
-          return p1.slice(0, -1);
-        });
-        return cssText.replace(cssContentRuleRe, function(match, p1, p2, p3) {
-          var rule = match.replace(p1, "").replace(p2, "");
-          return p3 + rule;
-        });
-      },
-      scopeCssText: function(cssText, scopeSelector) {
-        var unscoped = this.extractUnscopedRulesFromCssText(cssText);
-        cssText = this.insertPolyfillHostInCssText(cssText);
-        cssText = this.convertColonHost(cssText);
-        cssText = this.convertColonHostContext(cssText);
-        cssText = this.convertShadowDOMSelectors(cssText);
-        if (scopeSelector) {
-          var self = this, cssText;
-          withCssRules(cssText, function(rules) {
-            cssText = self.scopeRules(rules, scopeSelector);
-          });
-        }
-        cssText = cssText + "\n" + unscoped;
-        return cssText.trim();
-      },
-      extractUnscopedRulesFromCssText: function(cssText) {
-        var r = "", m;
-        while (m = cssCommentUnscopedRuleRe.exec(cssText)) {
-          r += m[1].slice(0, -1) + "\n\n";
-        }
-        while (m = cssContentUnscopedRuleRe.exec(cssText)) {
-          r += m[0].replace(m[2], "").replace(m[1], m[3]) + "\n\n";
-        }
-        return r;
-      },
-      convertColonHost: function(cssText) {
-        return this.convertColonRule(cssText, cssColonHostRe, this.colonHostPartReplacer);
-      },
-      convertColonHostContext: function(cssText) {
-        return this.convertColonRule(cssText, cssColonHostContextRe, this.colonHostContextPartReplacer);
-      },
-      convertColonRule: function(cssText, regExp, partReplacer) {
-        return cssText.replace(regExp, function(m, p1, p2, p3) {
-          p1 = polyfillHostNoCombinator;
-          if (p2) {
-            var parts = p2.split(","), r = [];
-            for (var i = 0, l = parts.length, p; i < l && (p = parts[i]); i++) {
-              p = p.trim();
-              r.push(partReplacer(p1, p, p3));
-            }
-            return r.join(",");
-          } else {
-            return p1 + p3;
-          }
-        });
-      },
-      colonHostContextPartReplacer: function(host, part, suffix) {
-        if (part.match(polyfillHost)) {
-          return this.colonHostPartReplacer(host, part, suffix);
-        } else {
-          return host + part + suffix + ", " + part + " " + host + suffix;
-        }
-      },
-      colonHostPartReplacer: function(host, part, suffix) {
-        return host + part.replace(polyfillHost, "") + suffix;
-      },
-      convertShadowDOMSelectors: function(cssText) {
-        for (var i = 0; i < shadowDOMSelectorsRe.length; i++) {
-          cssText = cssText.replace(shadowDOMSelectorsRe[i], " ");
-        }
-        return cssText;
-      },
-      scopeRules: function(cssRules, scopeSelector) {
-        var cssText = "";
-        if (cssRules) {
-          Array.prototype.forEach.call(cssRules, function(rule) {
-            if (rule.selectorText && (rule.style && rule.style.cssText !== undefined)) {
-              cssText += this.scopeSelector(rule.selectorText, scopeSelector, this.strictStyling) + " {\n	";
-              cssText += this.propertiesFromRule(rule) + "\n}\n\n";
-            } else if (rule.type === CSSRule.MEDIA_RULE) {
-              cssText += "@media " + rule.media.mediaText + " {\n";
-              cssText += this.scopeRules(rule.cssRules, scopeSelector);
-              cssText += "\n}\n\n";
-            } else {
-              try {
-                if (rule.cssText) {
-                  cssText += rule.cssText + "\n\n";
-                }
-              } catch (x) {
-                if (rule.type === CSSRule.KEYFRAMES_RULE && rule.cssRules) {
-                  cssText += this.ieSafeCssTextFromKeyFrameRule(rule);
-                }
-              }
-            }
-          }, this);
-        }
-        return cssText;
-      },
-      ieSafeCssTextFromKeyFrameRule: function(rule) {
-        var cssText = "@keyframes " + rule.name + " {";
-        Array.prototype.forEach.call(rule.cssRules, function(rule) {
-          cssText += " " + rule.keyText + " {" + rule.style.cssText + "}";
-        });
-        cssText += " }";
-        return cssText;
-      },
-      scopeSelector: function(selector, scopeSelector, strict) {
-        var r = [], parts = selector.split(",");
-        parts.forEach(function(p) {
-          p = p.trim();
-          if (this.selectorNeedsScoping(p, scopeSelector)) {
-            p = strict && !p.match(polyfillHostNoCombinator) ? this.applyStrictSelectorScope(p, scopeSelector) : this.applySelectorScope(p, scopeSelector);
-          }
-          r.push(p);
-        }, this);
-        return r.join(", ");
-      },
-      selectorNeedsScoping: function(selector, scopeSelector) {
-        if (Array.isArray(scopeSelector)) {
-          return true;
-        }
-        var re = this.makeScopeMatcher(scopeSelector);
-        return !selector.match(re);
-      },
-      makeScopeMatcher: function(scopeSelector) {
-        scopeSelector = scopeSelector.replace(/\[/g, "\\[").replace(/\[/g, "\\]");
-        return new RegExp("^(" + scopeSelector + ")" + selectorReSuffix, "m");
-      },
-      applySelectorScope: function(selector, selectorScope) {
-        return Array.isArray(selectorScope) ? this.applySelectorScopeList(selector, selectorScope) : this.applySimpleSelectorScope(selector, selectorScope);
-      },
-      applySelectorScopeList: function(selector, scopeSelectorList) {
-        var r = [];
-        for (var i = 0, s; s = scopeSelectorList[i]; i++) {
-          r.push(this.applySimpleSelectorScope(selector, s));
-        }
-        return r.join(", ");
-      },
-      applySimpleSelectorScope: function(selector, scopeSelector) {
-        if (selector.match(polyfillHostRe)) {
-          selector = selector.replace(polyfillHostNoCombinator, scopeSelector);
-          return selector.replace(polyfillHostRe, scopeSelector + " ");
-        } else {
-          return scopeSelector + " " + selector;
-        }
-      },
-      applyStrictSelectorScope: function(selector, scopeSelector) {
-        scopeSelector = scopeSelector.replace(/\[is=([^\]]*)\]/g, "$1");
-        var splits = [ " ", ">", "+", "~" ], scoped = selector, attrName = "[" + scopeSelector + "]";
-        splits.forEach(function(sep) {
-          var parts = scoped.split(sep);
-          scoped = parts.map(function(p) {
-            var t = p.trim().replace(polyfillHostRe, "");
-            if (t && splits.indexOf(t) < 0 && t.indexOf(attrName) < 0) {
-              p = t.replace(/([^:]*)(:*)(.*)/, "$1" + attrName + "$2$3");
-            }
-            return p;
-          }).join(sep);
-        });
-        return scoped;
-      },
-      insertPolyfillHostInCssText: function(selector) {
-        return selector.replace(colonHostContextRe, polyfillHostContext).replace(colonHostRe, polyfillHost);
-      },
-      propertiesFromRule: function(rule) {
-        var cssText = rule.style.cssText;
-        if (rule.style.content && !rule.style.content.match(/['"]+|attr/)) {
-          cssText = cssText.replace(/content:[^;]*;/g, "content: '" + rule.style.content + "';");
-        }
-        var style = rule.style;
-        for (var i in style) {
-          if (style[i] === "initial") {
-            cssText += i + ": initial; ";
-          }
-        }
-        return cssText;
-      },
-      replaceTextInStyles: function(styles, action) {
-        if (styles && action) {
-          if (!(styles instanceof Array)) {
-            styles = [ styles ];
-          }
-          Array.prototype.forEach.call(styles, function(s) {
-            s.textContent = action.call(this, s.textContent);
-          }, this);
-        }
-      },
-      addCssToDocument: function(cssText, name) {
-        if (cssText.match("@import")) {
-          addOwnSheet(cssText, name);
-        } else {
-          addCssToDocument(cssText);
-        }
-      }
-    };
-    var selectorRe = /([^{]*)({[\s\S]*?})/gim, cssCommentRe = /\/\*[^*]*\*+([^/*][^*]*\*+)*\//gim, cssCommentNextSelectorRe = /\/\*\s*@polyfill ([^*]*\*+([^/*][^*]*\*+)*\/)([^{]*?){/gim, cssContentNextSelectorRe = /polyfill-next-selector[^}]*content\:[\s]*?['"](.*?)['"][;\s]*}([^{]*?){/gim, cssCommentRuleRe = /\/\*\s@polyfill-rule([^*]*\*+([^/*][^*]*\*+)*)\//gim, cssContentRuleRe = /(polyfill-rule)[^}]*(content\:[\s]*['"](.*?)['"])[;\s]*[^}]*}/gim, cssCommentUnscopedRuleRe = /\/\*\s@polyfill-unscoped-rule([^*]*\*+([^/*][^*]*\*+)*)\//gim, cssContentUnscopedRuleRe = /(polyfill-unscoped-rule)[^}]*(content\:[\s]*['"](.*?)['"])[;\s]*[^}]*}/gim, cssPseudoRe = /::(x-[^\s{,(]*)/gim, cssPartRe = /::part\(([^)]*)\)/gim, polyfillHost = "-shadowcsshost", polyfillHostContext = "-shadowcsscontext", parenSuffix = ")(?:\\((" + "(?:\\([^)(]*\\)|[^)(]*)+?" + ")\\))?([^,{]*)";
-    var cssColonHostRe = new RegExp("(" + polyfillHost + parenSuffix, "gim"), cssColonHostContextRe = new RegExp("(" + polyfillHostContext + parenSuffix, "gim"), selectorReSuffix = "([>\\s~+[.,{:][\\s\\S]*)?$", colonHostRe = /\:host/gim, colonHostContextRe = /\:host-context/gim, polyfillHostNoCombinator = polyfillHost + "-no-combinator", polyfillHostRe = new RegExp(polyfillHost, "gim"), polyfillHostContextRe = new RegExp(polyfillHostContext, "gim"), shadowDOMSelectorsRe = [ /\^\^/g, /\^/g, /\/shadow\//g, /\/shadow-deep\//g, /::shadow/g, /\/deep\//g, /::content/g ];
-    function stylesToCssText(styles, preserveComments) {
-      var cssText = "";
-      Array.prototype.forEach.call(styles, function(s) {
-        cssText += s.textContent + "\n\n";
-      });
-      if (!preserveComments) {
-        cssText = cssText.replace(cssCommentRe, "");
-      }
-      return cssText;
-    }
-    function cssTextToStyle(cssText) {
-      var style = document.createElement("style");
-      style.textContent = cssText;
-      return style;
-    }
-    function cssToRules(cssText) {
-      var style = cssTextToStyle(cssText);
-      document.head.appendChild(style);
-      var rules = [];
-      if (style.sheet) {
-        try {
-          rules = style.sheet.cssRules;
-        } catch (e) {}
-      } else {
-        console.warn("sheet not found", style);
-      }
-      style.parentNode.removeChild(style);
-      return rules;
-    }
-    var frame = document.createElement("iframe");
-    frame.style.display = "none";
-    function initFrame() {
-      frame.initialized = true;
-      document.body.appendChild(frame);
-      var doc = frame.contentDocument;
-      var base = doc.createElement("base");
-      base.href = document.baseURI;
-      doc.head.appendChild(base);
-    }
-    function inFrame(fn) {
-      if (!frame.initialized) {
-        initFrame();
-      }
-      document.body.appendChild(frame);
-      fn(frame.contentDocument);
-      document.body.removeChild(frame);
-    }
-    var isChrome = navigator.userAgent.match("Chrome");
-    function withCssRules(cssText, callback) {
-      if (!callback) {
-        return;
-      }
-      var rules;
-      if (cssText.match("@import") && isChrome) {
-        var style = cssTextToStyle(cssText);
-        inFrame(function(doc) {
-          doc.head.appendChild(style.impl);
-          rules = Array.prototype.slice.call(style.sheet.cssRules, 0);
-          callback(rules);
-        });
-      } else {
-        rules = cssToRules(cssText);
-        callback(rules);
-      }
-    }
-    function rulesToCss(cssRules) {
-      for (var i = 0, css = []; i < cssRules.length; i++) {
-        css.push(cssRules[i].cssText);
-      }
-      return css.join("\n\n");
-    }
-    function addCssToDocument(cssText) {
-      if (cssText) {
-        getSheet().appendChild(document.createTextNode(cssText));
-      }
-    }
-    function addOwnSheet(cssText, name) {
-      var style = cssTextToStyle(cssText);
-      style.setAttribute(name, "");
-      style.setAttribute(SHIMMED_ATTRIBUTE, "");
-      document.head.appendChild(style);
-    }
-    var SHIM_ATTRIBUTE = "shim-shadowdom";
-    var SHIMMED_ATTRIBUTE = "shim-shadowdom-css";
-    var NO_SHIM_ATTRIBUTE = "no-shim";
-    var sheet;
-    function getSheet() {
-      if (!sheet) {
-        sheet = document.createElement("style");
-        sheet.setAttribute(SHIMMED_ATTRIBUTE, "");
-        sheet[SHIMMED_ATTRIBUTE] = true;
-      }
-      return sheet;
-    }
-    if (window.ShadowDOMPolyfill) {
-      addCssToDocument("style { display: none !important; }\n");
-      var doc = ShadowDOMPolyfill.wrap(document);
-      var head = doc.querySelector("head");
-      head.insertBefore(getSheet(), head.childNodes[0]);
-      document.addEventListener("DOMContentLoaded", function() {
-        var urlResolver = scope.urlResolver;
-        if (window.HTMLImports && !HTMLImports.useNative) {
-          var SHIM_SHEET_SELECTOR = "link[rel=stylesheet]" + "[" + SHIM_ATTRIBUTE + "]";
-          var SHIM_STYLE_SELECTOR = "style[" + SHIM_ATTRIBUTE + "]";
-          HTMLImports.importer.documentPreloadSelectors += "," + SHIM_SHEET_SELECTOR;
-          HTMLImports.importer.importsPreloadSelectors += "," + SHIM_SHEET_SELECTOR;
-          HTMLImports.parser.documentSelectors = [ HTMLImports.parser.documentSelectors, SHIM_SHEET_SELECTOR, SHIM_STYLE_SELECTOR ].join(",");
-          var originalParseGeneric = HTMLImports.parser.parseGeneric;
-          HTMLImports.parser.parseGeneric = function(elt) {
-            if (elt[SHIMMED_ATTRIBUTE]) {
-              return;
-            }
-            var style = elt.__importElement || elt;
-            if (!style.hasAttribute(SHIM_ATTRIBUTE)) {
-              originalParseGeneric.call(this, elt);
-              return;
-            }
-            if (elt.__resource) {
-              style = elt.ownerDocument.createElement("style");
-              style.textContent = elt.__resource;
-            }
-            HTMLImports.path.resolveUrlsInStyle(style);
-            style.textContent = ShadowCSS.shimStyle(style);
-            style.removeAttribute(SHIM_ATTRIBUTE, "");
-            style.setAttribute(SHIMMED_ATTRIBUTE, "");
-            style[SHIMMED_ATTRIBUTE] = true;
-            if (style.parentNode !== head) {
-              if (elt.parentNode === head) {
-                head.replaceChild(style, elt);
-              } else {
-                this.addElementToDocument(style);
-              }
-            }
-            style.__importParsed = true;
-            this.markParsingComplete(elt);
-            this.parseNext();
-          };
-          var hasResource = HTMLImports.parser.hasResource;
-          HTMLImports.parser.hasResource = function(node) {
-            if (node.localName === "link" && node.rel === "stylesheet" && node.hasAttribute(SHIM_ATTRIBUTE)) {
-              return node.__resource;
-            } else {
-              return hasResource.call(this, node);
-            }
-          };
-        }
-      });
-    }
-    scope.ShadowCSS = ShadowCSS;
-  })(window.WebComponents);
-}
-
-(function(scope) {
-  if (window.ShadowDOMPolyfill) {
-    window.wrap = ShadowDOMPolyfill.wrapIfNeeded;
-    window.unwrap = ShadowDOMPolyfill.unwrapIfNeeded;
-  } else {
-    window.wrap = window.unwrap = function(n) {
-      return n;
-    };
-  }
-})(window.WebComponents);
-
-(function(global) {
-  var registrationsTable = new WeakMap();
-  var setImmediate;
-  if (/Trident/.test(navigator.userAgent)) {
-    setImmediate = setTimeout;
-  } else if (window.setImmediate) {
-    setImmediate = window.setImmediate;
-  } else {
-    var setImmediateQueue = [];
-    var sentinel = String(Math.random());
-    window.addEventListener("message", function(e) {
-      if (e.data === sentinel) {
-        var queue = setImmediateQueue;
-        setImmediateQueue = [];
-        queue.forEach(function(func) {
-          func();
-        });
-      }
-    });
-    setImmediate = function(func) {
-      setImmediateQueue.push(func);
-      window.postMessage(sentinel, "*");
-    };
-  }
-  var isScheduled = false;
-  var scheduledObservers = [];
-  function scheduleCallback(observer) {
-    scheduledObservers.push(observer);
-    if (!isScheduled) {
-      isScheduled = true;
-      setImmediate(dispatchCallbacks);
-    }
-  }
-  function wrapIfNeeded(node) {
-    return window.ShadowDOMPolyfill && window.ShadowDOMPolyfill.wrapIfNeeded(node) || node;
-  }
-  function dispatchCallbacks() {
-    isScheduled = false;
-    var observers = scheduledObservers;
-    scheduledObservers = [];
-    observers.sort(function(o1, o2) {
-      return o1.uid_ - o2.uid_;
-    });
-    var anyNonEmpty = false;
-    observers.forEach(function(observer) {
-      var queue = observer.takeRecords();
-      removeTransientObserversFor(observer);
-      if (queue.length) {
-        observer.callback_(queue, observer);
-        anyNonEmpty = true;
-      }
-    });
-    if (anyNonEmpty) dispatchCallbacks();
-  }
-  function removeTransientObserversFor(observer) {
-    observer.nodes_.forEach(function(node) {
-      var registrations = registrationsTable.get(node);
-      if (!registrations) return;
-      registrations.forEach(function(registration) {
-        if (registration.observer === observer) registration.removeTransientObservers();
-      });
-    });
-  }
-  function forEachAncestorAndObserverEnqueueRecord(target, callback) {
-    for (var node = target; node; node = node.parentNode) {
-      var registrations = registrationsTable.get(node);
-      if (registrations) {
-        for (var j = 0; j < registrations.length; j++) {
-          var registration = registrations[j];
-          var options = registration.options;
-          if (node !== target && !options.subtree) continue;
-          var record = callback(options);
-          if (record) registration.enqueue(record);
-        }
-      }
-    }
-  }
-  var uidCounter = 0;
-  function JsMutationObserver(callback) {
-    this.callback_ = callback;
-    this.nodes_ = [];
-    this.records_ = [];
-    this.uid_ = ++uidCounter;
-  }
-  JsMutationObserver.prototype = {
-    observe: function(target, options) {
-      target = wrapIfNeeded(target);
-      if (!options.childList && !options.attributes && !options.characterData || options.attributeOldValue && !options.attributes || options.attributeFilter && options.attributeFilter.length && !options.attributes || options.characterDataOldValue && !options.characterData) {
-        throw new SyntaxError();
-      }
-      var registrations = registrationsTable.get(target);
-      if (!registrations) registrationsTable.set(target, registrations = []);
-      var registration;
-      for (var i = 0; i < registrations.length; i++) {
-        if (registrations[i].observer === this) {
-          registration = registrations[i];
-          registration.removeListeners();
-          registration.options = options;
-          break;
-        }
-      }
-      if (!registration) {
-        registration = new Registration(this, target, options);
-        registrations.push(registration);
-        this.nodes_.push(target);
-      }
-      registration.addListeners();
-    },
-    disconnect: function() {
-      this.nodes_.forEach(function(node) {
-        var registrations = registrationsTable.get(node);
-        for (var i = 0; i < registrations.length; i++) {
-          var registration = registrations[i];
-          if (registration.observer === this) {
-            registration.removeListeners();
-            registrations.splice(i, 1);
-            break;
-          }
-        }
-      }, this);
-      this.records_ = [];
-    },
-    takeRecords: function() {
-      var copyOfRecords = this.records_;
-      this.records_ = [];
-      return copyOfRecords;
-    }
-  };
-  function MutationRecord(type, target) {
-    this.type = type;
-    this.target = target;
-    this.addedNodes = [];
-    this.removedNodes = [];
-    this.previousSibling = null;
-    this.nextSibling = null;
-    this.attributeName = null;
-    this.attributeNamespace = null;
-    this.oldValue = null;
-  }
-  function copyMutationRecord(original) {
-    var record = new MutationRecord(original.type, original.target);
-    record.addedNodes = original.addedNodes.slice();
-    record.removedNodes = original.removedNodes.slice();
-    record.previousSibling = original.previousSibling;
-    record.nextSibling = original.nextSibling;
-    record.attributeName = original.attributeName;
-    record.attributeNamespace = original.attributeNamespace;
-    record.oldValue = original.oldValue;
-    return record;
-  }
-  var currentRecord, recordWithOldValue;
-  function getRecord(type, target) {
-    return currentRecord = new MutationRecord(type, target);
-  }
-  function getRecordWithOldValue(oldValue) {
-    if (recordWithOldValue) return recordWithOldValue;
-    recordWithOldValue = copyMutationRecord(currentRecord);
-    recordWithOldValue.oldValue = oldValue;
-    return recordWithOldValue;
-  }
-  function clearRecords() {
-    currentRecord = recordWithOldValue = undefined;
-  }
-  function recordRepresentsCurrentMutation(record) {
-    return record === recordWithOldValue || record === currentRecord;
-  }
-  function selectRecord(lastRecord, newRecord) {
-    if (lastRecord === newRecord) return lastRecord;
-    if (recordWithOldValue && recordRepresentsCurrentMutation(lastRecord)) return recordWithOldValue;
-    return null;
-  }
-  function Registration(observer, target, options) {
-    this.observer = observer;
-    this.target = target;
-    this.options = options;
-    this.transientObservedNodes = [];
-  }
-  Registration.prototype = {
-    enqueue: function(record) {
-      var records = this.observer.records_;
-      var length = records.length;
-      if (records.length > 0) {
-        var lastRecord = records[length - 1];
-        var recordToReplaceLast = selectRecord(lastRecord, record);
-        if (recordToReplaceLast) {
-          records[length - 1] = recordToReplaceLast;
-          return;
-        }
-      } else {
-        scheduleCallback(this.observer);
-      }
-      records[length] = record;
-    },
-    addListeners: function() {
-      this.addListeners_(this.target);
-    },
-    addListeners_: function(node) {
-      var options = this.options;
-      if (options.attributes) node.addEventListener("DOMAttrModified", this, true);
-      if (options.characterData) node.addEventListener("DOMCharacterDataModified", this, true);
-      if (options.childList) node.addEventListener("DOMNodeInserted", this, true);
-      if (options.childList || options.subtree) node.addEventListener("DOMNodeRemoved", this, true);
-    },
-    removeListeners: function() {
-      this.removeListeners_(this.target);
-    },
-    removeListeners_: function(node) {
-      var options = this.options;
-      if (options.attributes) node.removeEventListener("DOMAttrModified", this, true);
-      if (options.characterData) node.removeEventListener("DOMCharacterDataModified", this, true);
-      if (options.childList) node.removeEventListener("DOMNodeInserted", this, true);
-      if (options.childList || options.subtree) node.removeEventListener("DOMNodeRemoved", this, true);
-    },
-    addTransientObserver: function(node) {
-      if (node === this.target) return;
-      this.addListeners_(node);
-      this.transientObservedNodes.push(node);
-      var registrations = registrationsTable.get(node);
-      if (!registrations) registrationsTable.set(node, registrations = []);
-      registrations.push(this);
-    },
-    removeTransientObservers: function() {
-      var transientObservedNodes = this.transientObservedNodes;
-      this.transientObservedNodes = [];
-      transientObservedNodes.forEach(function(node) {
-        this.removeListeners_(node);
-        var registrations = registrationsTable.get(node);
-        for (var i = 0; i < registrations.length; i++) {
-          if (registrations[i] === this) {
-            registrations.splice(i, 1);
-            break;
-          }
-        }
-      }, this);
-    },
-    handleEvent: function(e) {
-      e.stopImmediatePropagation();
-      switch (e.type) {
-       case "DOMAttrModified":
-        var name = e.attrName;
-        var namespace = e.relatedNode.namespaceURI;
-        var target = e.target;
-        var record = new getRecord("attributes", target);
-        record.attributeName = name;
-        record.attributeNamespace = namespace;
-        var oldValue = e.attrChange === MutationEvent.ADDITION ? null : e.prevValue;
-        forEachAncestorAndObserverEnqueueRecord(target, function(options) {
-          if (!options.attributes) return;
-          if (options.attributeFilter && options.attributeFilter.length && options.attributeFilter.indexOf(name) === -1 && options.attributeFilter.indexOf(namespace) === -1) {
-            return;
-          }
-          if (options.attributeOldValue) return getRecordWithOldValue(oldValue);
-          return record;
-        });
-        break;
-
-       case "DOMCharacterDataModified":
-        var target = e.target;
-        var record = getRecord("characterData", target);
-        var oldValue = e.prevValue;
-        forEachAncestorAndObserverEnqueueRecord(target, function(options) {
-          if (!options.characterData) return;
-          if (options.characterDataOldValue) return getRecordWithOldValue(oldValue);
-          return record;
-        });
-        break;
-
-       case "DOMNodeRemoved":
-        this.addTransientObserver(e.target);
-
-       case "DOMNodeInserted":
-        var target = e.relatedNode;
-        var changedNode = e.target;
-        var addedNodes, removedNodes;
-        if (e.type === "DOMNodeInserted") {
-          addedNodes = [ changedNode ];
-          removedNodes = [];
-        } else {
-          addedNodes = [];
-          removedNodes = [ changedNode ];
-        }
-        var previousSibling = changedNode.previousSibling;
-        var nextSibling = changedNode.nextSibling;
-        var record = getRecord("childList", target);
-        record.addedNodes = addedNodes;
-        record.removedNodes = removedNodes;
-        record.previousSibling = previousSibling;
-        record.nextSibling = nextSibling;
-        forEachAncestorAndObserverEnqueueRecord(target, function(options) {
-          if (!options.childList) return;
-          return record;
-        });
-      }
-      clearRecords();
-    }
-  };
-  global.JsMutationObserver = JsMutationObserver;
-  if (!global.MutationObserver) global.MutationObserver = JsMutationObserver;
-})(this);
-
-window.HTMLImports = window.HTMLImports || {
-  flags: {}
-};
-
-(function(scope) {
-  var IMPORT_LINK_TYPE = "import";
-  var useNative = Boolean(IMPORT_LINK_TYPE in document.createElement("link"));
-  var hasShadowDOMPolyfill = Boolean(window.ShadowDOMPolyfill);
-  var wrap = function(node) {
-    return hasShadowDOMPolyfill ? ShadowDOMPolyfill.wrapIfNeeded(node) : node;
-  };
-  var rootDocument = wrap(document);
-  var currentScriptDescriptor = {
-    get: function() {
-      var script = HTMLImports.currentScript || document.currentScript || (document.readyState !== "complete" ? document.scripts[document.scripts.length - 1] : null);
-      return wrap(script);
-    },
-    configurable: true
-  };
-  Object.defineProperty(document, "_currentScript", currentScriptDescriptor);
-  Object.defineProperty(rootDocument, "_currentScript", currentScriptDescriptor);
-  var isIE = /Trident/.test(navigator.userAgent);
-  function whenReady(callback, doc) {
-    doc = doc || rootDocument;
-    whenDocumentReady(function() {
-      watchImportsLoad(callback, doc);
-    }, doc);
-  }
-  var requiredReadyState = isIE ? "complete" : "interactive";
-  var READY_EVENT = "readystatechange";
-  function isDocumentReady(doc) {
-    return doc.readyState === "complete" || doc.readyState === requiredReadyState;
-  }
-  function whenDocumentReady(callback, doc) {
-    if (!isDocumentReady(doc)) {
-      var checkReady = function() {
-        if (doc.readyState === "complete" || doc.readyState === requiredReadyState) {
-          doc.removeEventListener(READY_EVENT, checkReady);
-          whenDocumentReady(callback, doc);
-        }
-      };
-      doc.addEventListener(READY_EVENT, checkReady);
-    } else if (callback) {
-      callback();
-    }
-  }
-  function markTargetLoaded(event) {
-    event.target.__loaded = true;
-  }
-  function watchImportsLoad(callback, doc) {
-    var imports = doc.querySelectorAll("link[rel=import]");
-    var loaded = 0, l = imports.length;
-    function checkDone(d) {
-      if (loaded == l && callback) {
-        callback();
-      }
-    }
-    function loadedImport(e) {
-      markTargetLoaded(e);
-      loaded++;
-      checkDone();
-    }
-    if (l) {
-      for (var i = 0, imp; i < l && (imp = imports[i]); i++) {
-        if (isImportLoaded(imp)) {
-          loadedImport.call(imp, {
-            target: imp
-          });
-        } else {
-          imp.addEventListener("load", loadedImport);
-          imp.addEventListener("error", loadedImport);
-        }
-      }
-    } else {
-      checkDone();
-    }
-  }
-  function isImportLoaded(link) {
-    return useNative ? link.__loaded || link.import && link.import.readyState !== "loading" : link.__importParsed;
-  }
-  if (useNative) {
-    new MutationObserver(function(mxns) {
-      for (var i = 0, l = mxns.length, m; i < l && (m = mxns[i]); i++) {
-        if (m.addedNodes) {
-          handleImports(m.addedNodes);
-        }
-      }
-    }).observe(document.head, {
-      childList: true
-    });
-    function handleImports(nodes) {
-      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
-        if (isImport(n)) {
-          handleImport(n);
-        }
-      }
-    }
-    function isImport(element) {
-      return element.localName === "link" && element.rel === "import";
-    }
-    function handleImport(element) {
-      var loaded = element.import;
-      if (loaded) {
-        markTargetLoaded({
-          target: element
-        });
-      } else {
-        element.addEventListener("load", markTargetLoaded);
-        element.addEventListener("error", markTargetLoaded);
-      }
-    }
-    (function() {
-      if (document.readyState === "loading") {
-        var imports = document.querySelectorAll("link[rel=import]");
-        for (var i = 0, l = imports.length, imp; i < l && (imp = imports[i]); i++) {
-          handleImport(imp);
-        }
-      }
-    })();
-  }
-  whenReady(function() {
-    HTMLImports.ready = true;
-    HTMLImports.readyTime = new Date().getTime();
-    rootDocument.dispatchEvent(new CustomEvent("HTMLImportsLoaded", {
-      bubbles: true
-    }));
-  });
-  scope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;
-  scope.useNative = useNative;
-  scope.rootDocument = rootDocument;
-  scope.whenReady = whenReady;
-  scope.isIE = isIE;
-})(HTMLImports);
-
-(function(scope) {
-  var modules = [];
-  var addModule = function(module) {
-    modules.push(module);
-  };
-  var initializeModules = function() {
-    modules.forEach(function(module) {
-      module(scope);
-    });
-  };
-  scope.addModule = addModule;
-  scope.initializeModules = initializeModules;
-})(HTMLImports);
-
-HTMLImports.addModule(function(scope) {
-  var CSS_URL_REGEXP = /(url\()([^)]*)(\))/g;
-  var CSS_IMPORT_REGEXP = /(@import[\s]+(?!url\())([^;]*)(;)/g;
-  var path = {
-    resolveUrlsInStyle: function(style) {
-      var doc = style.ownerDocument;
-      var resolver = doc.createElement("a");
-      style.textContent = this.resolveUrlsInCssText(style.textContent, resolver);
-      return style;
-    },
-    resolveUrlsInCssText: function(cssText, urlObj) {
-      var r = this.replaceUrls(cssText, urlObj, CSS_URL_REGEXP);
-      r = this.replaceUrls(r, urlObj, CSS_IMPORT_REGEXP);
-      return r;
-    },
-    replaceUrls: function(text, urlObj, regexp) {
-      return text.replace(regexp, function(m, pre, url, post) {
-        var urlPath = url.replace(/["']/g, "");
-        urlObj.href = urlPath;
-        urlPath = urlObj.href;
-        return pre + "'" + urlPath + "'" + post;
-      });
-    }
-  };
-  scope.path = path;
-});
-
-HTMLImports.addModule(function(scope) {
-  xhr = {
-    async: true,
-    ok: function(request) {
-      return request.status >= 200 && request.status < 300 || request.status === 304 || request.status === 0;
-    },
-    load: function(url, next, nextContext) {
-      var request = new XMLHttpRequest();
-      if (scope.flags.debug || scope.flags.bust) {
-        url += "?" + Math.random();
-      }
-      request.open("GET", url, xhr.async);
-      request.addEventListener("readystatechange", function(e) {
-        if (request.readyState === 4) {
-          var locationHeader = request.getResponseHeader("Location");
-          var redirectedUrl = null;
-          if (locationHeader) {
-            var redirectedUrl = locationHeader.substr(0, 1) === "/" ? location.origin + locationHeader : locationHeader;
-          }
-          next.call(nextContext, !xhr.ok(request) && request, request.response || request.responseText, redirectedUrl);
-        }
-      });
-      request.send();
-      return request;
-    },
-    loadDocument: function(url, next, nextContext) {
-      this.load(url, next, nextContext).responseType = "document";
-    }
-  };
-  scope.xhr = xhr;
-});
-
-HTMLImports.addModule(function(scope) {
-  var xhr = scope.xhr;
-  var flags = scope.flags;
-  var Loader = function(onLoad, onComplete) {
-    this.cache = {};
-    this.onload = onLoad;
-    this.oncomplete = onComplete;
-    this.inflight = 0;
-    this.pending = {};
-  };
-  Loader.prototype = {
-    addNodes: function(nodes) {
-      this.inflight += nodes.length;
-      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
-        this.require(n);
-      }
-      this.checkDone();
-    },
-    addNode: function(node) {
-      this.inflight++;
-      this.require(node);
-      this.checkDone();
-    },
-    require: function(elt) {
-      var url = elt.src || elt.href;
-      elt.__nodeUrl = url;
-      if (!this.dedupe(url, elt)) {
-        this.fetch(url, elt);
-      }
-    },
-    dedupe: function(url, elt) {
-      if (this.pending[url]) {
-        this.pending[url].push(elt);
-        return true;
-      }
-      var resource;
-      if (this.cache[url]) {
-        this.onload(url, elt, this.cache[url]);
-        this.tail();
-        return true;
-      }
-      this.pending[url] = [ elt ];
-      return false;
-    },
-    fetch: function(url, elt) {
-      flags.load && console.log("fetch", url, elt);
-      if (url.match(/^data:/)) {
-        var pieces = url.split(",");
-        var header = pieces[0];
-        var body = pieces[1];
-        if (header.indexOf(";base64") > -1) {
-          body = atob(body);
-        } else {
-          body = decodeURIComponent(body);
-        }
-        setTimeout(function() {
-          this.receive(url, elt, null, body);
-        }.bind(this), 0);
-      } else {
-        var receiveXhr = function(err, resource, redirectedUrl) {
-          this.receive(url, elt, err, resource, redirectedUrl);
-        }.bind(this);
-        xhr.load(url, receiveXhr);
-      }
-    },
-    receive: function(url, elt, err, resource, redirectedUrl) {
-      this.cache[url] = resource;
-      var $p = this.pending[url];
-      for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
-        this.onload(url, p, resource, err, redirectedUrl);
-        this.tail();
-      }
-      this.pending[url] = null;
-    },
-    tail: function() {
-      --this.inflight;
-      this.checkDone();
-    },
-    checkDone: function() {
-      if (!this.inflight) {
-        this.oncomplete();
-      }
-    }
-  };
-  scope.Loader = Loader;
-});
-
-HTMLImports.addModule(function(scope) {
-  var Observer = function(addCallback) {
-    this.addCallback = addCallback;
-    this.mo = new MutationObserver(this.handler.bind(this));
-  };
-  Observer.prototype = {
-    handler: function(mutations) {
-      for (var i = 0, l = mutations.length, m; i < l && (m = mutations[i]); i++) {
-        if (m.type === "childList" && m.addedNodes.length) {
-          this.addedNodes(m.addedNodes);
-        }
-      }
-    },
-    addedNodes: function(nodes) {
-      if (this.addCallback) {
-        this.addCallback(nodes);
-      }
-      for (var i = 0, l = nodes.length, n, loading; i < l && (n = nodes[i]); i++) {
-        if (n.children && n.children.length) {
-          this.addedNodes(n.children);
-        }
-      }
-    },
-    observe: function(root) {
-      this.mo.observe(root, {
-        childList: true,
-        subtree: true
-      });
-    }
-  };
-  scope.Observer = Observer;
-});
-
-HTMLImports.addModule(function(scope) {
-  var path = scope.path;
-  var rootDocument = scope.rootDocument;
-  var flags = scope.flags;
-  var isIE = scope.isIE;
-  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
-  var IMPORT_SELECTOR = "link[rel=" + IMPORT_LINK_TYPE + "]";
-  var importParser = {
-    documentSelectors: IMPORT_SELECTOR,
-    importsSelectors: [ IMPORT_SELECTOR, "link[rel=stylesheet]", "style", "script:not([type])", 'script[type="text/javascript"]' ].join(","),
-    map: {
-      link: "parseLink",
-      script: "parseScript",
-      style: "parseStyle"
-    },
-    dynamicElements: [],
-    parseNext: function() {
-      var next = this.nextToParse();
-      if (next) {
-        this.parse(next);
-      }
-    },
-    parse: function(elt) {
-      if (this.isParsed(elt)) {
-        flags.parse && console.log("[%s] is already parsed", elt.localName);
-        return;
-      }
-      var fn = this[this.map[elt.localName]];
-      if (fn) {
-        this.markParsing(elt);
-        fn.call(this, elt);
-      }
-    },
-    parseDynamic: function(elt, quiet) {
-      this.dynamicElements.push(elt);
-      if (!quiet) {
-        this.parseNext();
-      }
-    },
-    markParsing: function(elt) {
-      flags.parse && console.log("parsing", elt);
-      this.parsingElement = elt;
-    },
-    markParsingComplete: function(elt) {
-      elt.__importParsed = true;
-      this.markDynamicParsingComplete(elt);
-      if (elt.__importElement) {
-        elt.__importElement.__importParsed = true;
-        this.markDynamicParsingComplete(elt.__importElement);
-      }
-      this.parsingElement = null;
-      flags.parse && console.log("completed", elt);
-    },
-    markDynamicParsingComplete: function(elt) {
-      var i = this.dynamicElements.indexOf(elt);
-      if (i >= 0) {
-        this.dynamicElements.splice(i, 1);
-      }
-    },
-    parseImport: function(elt) {
-      if (HTMLImports.__importsParsingHook) {
-        HTMLImports.__importsParsingHook(elt);
-      }
-      if (elt.import) {
-        elt.import.__importParsed = true;
-      }
-      this.markParsingComplete(elt);
-      if (elt.__resource && !elt.__error) {
-        elt.dispatchEvent(new CustomEvent("load", {
-          bubbles: false
-        }));
-      } else {
-        elt.dispatchEvent(new CustomEvent("error", {
-          bubbles: false
-        }));
-      }
-      if (elt.__pending) {
-        var fn;
-        while (elt.__pending.length) {
-          fn = elt.__pending.shift();
-          if (fn) {
-            fn({
-              target: elt
-            });
-          }
-        }
-      }
-      this.parseNext();
-    },
-    parseLink: function(linkElt) {
-      if (nodeIsImport(linkElt)) {
-        this.parseImport(linkElt);
-      } else {
-        linkElt.href = linkElt.href;
-        this.parseGeneric(linkElt);
-      }
-    },
-    parseStyle: function(elt) {
-      var src = elt;
-      elt = cloneStyle(elt);
-      elt.__importElement = src;
-      this.parseGeneric(elt);
-    },
-    parseGeneric: function(elt) {
-      this.trackElement(elt);
-      this.addElementToDocument(elt);
-    },
-    rootImportForElement: function(elt) {
-      var n = elt;
-      while (n.ownerDocument.__importLink) {
-        n = n.ownerDocument.__importLink;
-      }
-      return n;
-    },
-    addElementToDocument: function(elt) {
-      var port = this.rootImportForElement(elt.__importElement || elt);
-      var l = port.__insertedElements = port.__insertedElements || 0;
-      var refNode = port.nextElementSibling;
-      for (var i = 0; i < l; i++) {
-        refNode = refNode && refNode.nextElementSibling;
-      }
-      port.parentNode.insertBefore(elt, refNode);
-    },
-    trackElement: function(elt, callback) {
-      var self = this;
-      var done = function(e) {
-        if (callback) {
-          callback(e);
-        }
-        self.markParsingComplete(elt);
-        self.parseNext();
-      };
-      elt.addEventListener("load", done);
-      elt.addEventListener("error", done);
-      if (isIE && elt.localName === "style") {
-        var fakeLoad = false;
-        if (elt.textContent.indexOf("@import") == -1) {
-          fakeLoad = true;
-        } else if (elt.sheet) {
-          fakeLoad = true;
-          var csr = elt.sheet.cssRules;
-          var len = csr ? csr.length : 0;
-          for (var i = 0, r; i < len && (r = csr[i]); i++) {
-            if (r.type === CSSRule.IMPORT_RULE) {
-              fakeLoad = fakeLoad && Boolean(r.styleSheet);
-            }
-          }
-        }
-        if (fakeLoad) {
-          elt.dispatchEvent(new CustomEvent("load", {
-            bubbles: false
-          }));
-        }
-      }
-    },
-    parseScript: function(scriptElt) {
-      var script = document.createElement("script");
-      script.__importElement = scriptElt;
-      script.src = scriptElt.src ? scriptElt.src : generateScriptDataUrl(scriptElt);
-      scope.currentScript = scriptElt;
-      this.trackElement(script, function(e) {
-        script.parentNode.removeChild(script);
-        scope.currentScript = null;
-      });
-      this.addElementToDocument(script);
-    },
-    nextToParse: function() {
-      this._mayParse = [];
-      return !this.parsingElement && (this.nextToParseInDoc(rootDocument) || this.nextToParseDynamic());
-    },
-    nextToParseInDoc: function(doc, link) {
-      if (doc && this._mayParse.indexOf(doc) < 0) {
-        this._mayParse.push(doc);
-        var nodes = doc.querySelectorAll(this.parseSelectorsForNode(doc));
-        for (var i = 0, l = nodes.length, p = 0, n; i < l && (n = nodes[i]); i++) {
-          if (!this.isParsed(n)) {
-            if (this.hasResource(n)) {
-              return nodeIsImport(n) ? this.nextToParseInDoc(n.import, n) : n;
-            } else {
-              return;
-            }
-          }
-        }
-      }
-      return link;
-    },
-    nextToParseDynamic: function() {
-      return this.dynamicElements[0];
-    },
-    parseSelectorsForNode: function(node) {
-      var doc = node.ownerDocument || node;
-      return doc === rootDocument ? this.documentSelectors : this.importsSelectors;
-    },
-    isParsed: function(node) {
-      return node.__importParsed;
-    },
-    needsDynamicParsing: function(elt) {
-      return this.dynamicElements.indexOf(elt) >= 0;
-    },
-    hasResource: function(node) {
-      if (nodeIsImport(node) && node.import === undefined) {
-        return false;
-      }
-      return true;
-    }
-  };
-  function nodeIsImport(elt) {
-    return elt.localName === "link" && elt.rel === IMPORT_LINK_TYPE;
-  }
-  function generateScriptDataUrl(script) {
-    var scriptContent = generateScriptContent(script);
-    return "data:text/javascript;charset=utf-8," + encodeURIComponent(scriptContent);
-  }
-  function generateScriptContent(script) {
-    return script.textContent + generateSourceMapHint(script);
-  }
-  function generateSourceMapHint(script) {
-    var owner = script.ownerDocument;
-    owner.__importedScripts = owner.__importedScripts || 0;
-    var moniker = script.ownerDocument.baseURI;
-    var num = owner.__importedScripts ? "-" + owner.__importedScripts : "";
-    owner.__importedScripts++;
-    return "\n//# sourceURL=" + moniker + num + ".js\n";
-  }
-  function cloneStyle(style) {
-    var clone = style.ownerDocument.createElement("style");
-    clone.textContent = style.textContent;
-    path.resolveUrlsInStyle(clone);
-    return clone;
-  }
-  scope.parser = importParser;
-  scope.IMPORT_SELECTOR = IMPORT_SELECTOR;
-});
-
-HTMLImports.addModule(function(scope) {
-  var flags = scope.flags;
-  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
-  var IMPORT_SELECTOR = scope.IMPORT_SELECTOR;
-  var rootDocument = scope.rootDocument;
-  var Loader = scope.Loader;
-  var Observer = scope.Observer;
-  var parser = scope.parser;
-  var importer = {
-    documents: {},
-    documentPreloadSelectors: IMPORT_SELECTOR,
-    importsPreloadSelectors: [ IMPORT_SELECTOR ].join(","),
-    loadNode: function(node) {
-      importLoader.addNode(node);
-    },
-    loadSubtree: function(parent) {
-      var nodes = this.marshalNodes(parent);
-      importLoader.addNodes(nodes);
-    },
-    marshalNodes: function(parent) {
-      return parent.querySelectorAll(this.loadSelectorsForNode(parent));
-    },
-    loadSelectorsForNode: function(node) {
-      var doc = node.ownerDocument || node;
-      return doc === rootDocument ? this.documentPreloadSelectors : this.importsPreloadSelectors;
-    },
-    loaded: function(url, elt, resource, err, redirectedUrl) {
-      flags.load && console.log("loaded", url, elt);
-      elt.__resource = resource;
-      elt.__error = err;
-      if (isImportLink(elt)) {
-        var doc = this.documents[url];
-        if (doc === undefined) {
-          doc = err ? null : makeDocument(resource, redirectedUrl || url);
-          if (doc) {
-            doc.__importLink = elt;
-            this.bootDocument(doc);
-          }
-          this.documents[url] = doc;
-        }
-        elt.import = doc;
-      }
-      parser.parseNext();
-    },
-    bootDocument: function(doc) {
-      this.loadSubtree(doc);
-      this.observer.observe(doc);
-      parser.parseNext();
-    },
-    loadedAll: function() {
-      parser.parseNext();
-    }
-  };
-  var importLoader = new Loader(importer.loaded.bind(importer), importer.loadedAll.bind(importer));
-  importer.observer = new Observer();
-  function isImportLink(elt) {
-    return isLinkRel(elt, IMPORT_LINK_TYPE);
-  }
-  function isLinkRel(elt, rel) {
-    return elt.localName === "link" && elt.getAttribute("rel") === rel;
-  }
-  function makeDocument(resource, url) {
-    var doc = document.implementation.createHTMLDocument(IMPORT_LINK_TYPE);
-    doc._URL = url;
-    var base = doc.createElement("base");
-    base.setAttribute("href", url);
-    if (!doc.baseURI) {
-      doc.baseURI = url;
-    }
-    var meta = doc.createElement("meta");
-    meta.setAttribute("charset", "utf-8");
-    doc.head.appendChild(meta);
-    doc.head.appendChild(base);
-    doc.body.innerHTML = resource;
-    if (window.HTMLTemplateElement && HTMLTemplateElement.bootstrap) {
-      HTMLTemplateElement.bootstrap(doc);
-    }
-    return doc;
-  }
-  if (!document.baseURI) {
-    var baseURIDescriptor = {
-      get: function() {
-        var base = document.querySelector("base");
-        return base ? base.href : window.location.href;
-      },
-      configurable: true
-    };
-    Object.defineProperty(document, "baseURI", baseURIDescriptor);
-    Object.defineProperty(rootDocument, "baseURI", baseURIDescriptor);
-  }
-  scope.importer = importer;
-  scope.importLoader = importLoader;
-});
-
-HTMLImports.addModule(function(scope) {
-  var parser = scope.parser;
-  var importer = scope.importer;
-  var dynamic = {
-    added: function(nodes) {
-      var owner, parsed;
-      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
-        if (!owner) {
-          owner = n.ownerDocument;
-          parsed = parser.isParsed(owner);
-        }
-        loading = this.shouldLoadNode(n);
-        if (loading) {
-          importer.loadNode(n);
-        }
-        if (this.shouldParseNode(n) && parsed) {
-          parser.parseDynamic(n, loading);
-        }
-      }
-    },
-    shouldLoadNode: function(node) {
-      return node.nodeType === 1 && matches.call(node, importer.loadSelectorsForNode(node));
-    },
-    shouldParseNode: function(node) {
-      return node.nodeType === 1 && matches.call(node, parser.parseSelectorsForNode(node));
-    }
-  };
-  importer.observer.addCallback = dynamic.added.bind(dynamic);
-  var matches = HTMLElement.prototype.matches || HTMLElement.prototype.matchesSelector || HTMLElement.prototype.webkitMatchesSelector || HTMLElement.prototype.mozMatchesSelector || HTMLElement.prototype.msMatchesSelector;
-});
-
-(function(scope) {
-  initializeModules = scope.initializeModules;
-  if (scope.useNative) {
-    return;
-  }
-  if (typeof window.CustomEvent !== "function") {
-    window.CustomEvent = function(inType, dictionary) {
-      var e = document.createEvent("HTMLEvents");
-      e.initEvent(inType, dictionary.bubbles === false ? false : true, dictionary.cancelable === false ? false : true, dictionary.detail);
-      return e;
-    };
-  }
-  initializeModules();
-  var rootDocument = scope.rootDocument;
-  function bootstrap() {
-    HTMLImports.importer.bootDocument(rootDocument);
-  }
-  if (document.readyState === "complete" || document.readyState === "interactive" && !window.attachEvent) {
-    bootstrap();
-  } else {
-    document.addEventListener("DOMContentLoaded", bootstrap);
-  }
-})(HTMLImports);
-
-window.CustomElements = window.CustomElements || {
-  flags: {}
-};
-
-(function(scope) {
-  var flags = scope.flags;
-  var modules = [];
-  var addModule = function(module) {
-    modules.push(module);
-  };
-  var initializeModules = function() {
-    modules.forEach(function(module) {
-      module(scope);
-    });
-  };
-  scope.addModule = addModule;
-  scope.initializeModules = initializeModules;
-  scope.hasNative = Boolean(document.registerElement);
-  scope.useNative = !flags.register && scope.hasNative && !window.ShadowDOMPolyfill && (!window.HTMLImports || HTMLImports.useNative);
-})(CustomElements);
-
-CustomElements.addModule(function(scope) {
-  var IMPORT_LINK_TYPE = window.HTMLImports ? HTMLImports.IMPORT_LINK_TYPE : "none";
-  function forSubtree(node, cb) {
-    findAllElements(node, function(e) {
-      if (cb(e)) {
-        return true;
-      }
-      forRoots(e, cb);
-    });
-    forRoots(node, cb);
-  }
-  function findAllElements(node, find, data) {
-    var e = node.firstElementChild;
-    if (!e) {
-      e = node.firstChild;
-      while (e && e.nodeType !== Node.ELEMENT_NODE) {
-        e = e.nextSibling;
-      }
-    }
-    while (e) {
-      if (find(e, data) !== true) {
-        findAllElements(e, find, data);
-      }
-      e = e.nextElementSibling;
-    }
-    return null;
-  }
-  function forRoots(node, cb) {
-    var root = node.shadowRoot;
-    while (root) {
-      forSubtree(root, cb);
-      root = root.olderShadowRoot;
-    }
-  }
-  var processingDocuments;
-  function forDocumentTree(doc, cb) {
-    processingDocuments = [];
-    _forDocumentTree(doc, cb);
-    processingDocuments = null;
-  }
-  function _forDocumentTree(doc, cb) {
-    doc = wrap(doc);
-    if (processingDocuments.indexOf(doc) >= 0) {
-      return;
-    }
-    processingDocuments.push(doc);
-    var imports = doc.querySelectorAll("link[rel=" + IMPORT_LINK_TYPE + "]");
-    for (var i = 0, l = imports.length, n; i < l && (n = imports[i]); i++) {
-      if (n.import) {
-        _forDocumentTree(n.import, cb);
-      }
-    }
-    cb(doc);
-  }
-  scope.forDocumentTree = forDocumentTree;
-  scope.forSubtree = forSubtree;
-});
-
-CustomElements.addModule(function(scope) {
-  var flags = scope.flags;
-  var forSubtree = scope.forSubtree;
-  var forDocumentTree = scope.forDocumentTree;
-  function addedNode(node) {
-    return added(node) || addedSubtree(node);
-  }
-  function added(node) {
-    if (scope.upgrade(node)) {
-      return true;
-    }
-    attached(node);
-  }
-  function addedSubtree(node) {
-    forSubtree(node, function(e) {
-      if (added(e)) {
-        return true;
-      }
-    });
-  }
-  function attachedNode(node) {
-    attached(node);
-    if (inDocument(node)) {
-      forSubtree(node, function(e) {
-        attached(e);
-      });
-    }
-  }
-  var hasPolyfillMutations = !window.MutationObserver || window.MutationObserver === window.JsMutationObserver;
-  scope.hasPolyfillMutations = hasPolyfillMutations;
-  var isPendingMutations = false;
-  var pendingMutations = [];
-  function deferMutation(fn) {
-    pendingMutations.push(fn);
-    if (!isPendingMutations) {
-      isPendingMutations = true;
-      setTimeout(takeMutations);
-    }
-  }
-  function takeMutations() {
-    isPendingMutations = false;
-    var $p = pendingMutations;
-    for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
-      p();
-    }
-    pendingMutations = [];
-  }
-  function attached(element) {
-    if (hasPolyfillMutations) {
-      deferMutation(function() {
-        _attached(element);
-      });
-    } else {
-      _attached(element);
-    }
-  }
-  function _attached(element) {
-    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
-      if (!element.__attached && inDocument(element)) {
-        element.__attached = true;
-        if (element.attachedCallback) {
-          element.attachedCallback();
-        }
-      }
-    }
-  }
-  function detachedNode(node) {
-    detached(node);
-    forSubtree(node, function(e) {
-      detached(e);
-    });
-  }
-  function detached(element) {
-    if (hasPolyfillMutations) {
-      deferMutation(function() {
-        _detached(element);
-      });
-    } else {
-      _detached(element);
-    }
-  }
-  function _detached(element) {
-    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
-      if (element.__attached && !inDocument(element)) {
-        element.__attached = false;
-        if (element.detachedCallback) {
-          element.detachedCallback();
-        }
-      }
-    }
-  }
-  function inDocument(element) {
-    var p = element;
-    var doc = wrap(document);
-    while (p) {
-      if (p == doc) {
-        return true;
-      }
-      p = p.parentNode || p.host;
-    }
-  }
-  function watchShadow(node) {
-    if (node.shadowRoot && !node.shadowRoot.__watched) {
-      flags.dom && console.log("watching shadow-root for: ", node.localName);
-      var root = node.shadowRoot;
-      while (root) {
-        observe(root);
-        root = root.olderShadowRoot;
-      }
-    }
-  }
-  function handler(mutations) {
-    if (flags.dom) {
-      var mx = mutations[0];
-      if (mx && mx.type === "childList" && mx.addedNodes) {
-        if (mx.addedNodes) {
-          var d = mx.addedNodes[0];
-          while (d && d !== document && !d.host) {
-            d = d.parentNode;
-          }
-          var u = d && (d.URL || d._URL || d.host && d.host.localName) || "";
-          u = u.split("/?").shift().split("/").pop();
-        }
-      }
-      console.group("mutations (%d) [%s]", mutations.length, u || "");
-    }
-    mutations.forEach(function(mx) {
-      if (mx.type === "childList") {
-        forEach(mx.addedNodes, function(n) {
-          if (!n.localName) {
-            return;
-          }
-          addedNode(n);
-        });
-        forEach(mx.removedNodes, function(n) {
-          if (!n.localName) {
-            return;
-          }
-          detachedNode(n);
-        });
-      }
-    });
-    flags.dom && console.groupEnd();
-  }
-  function takeRecords(node) {
-    node = wrap(node);
-    if (!node) {
-      node = wrap(document);
-    }
-    while (node.parentNode) {
-      node = node.parentNode;
-    }
-    var observer = node.__observer;
-    if (observer) {
-      handler(observer.takeRecords());
-      takeMutations();
-    }
-  }
-  var forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);
-  function observe(inRoot) {
-    if (inRoot.__observer) {
-      return;
-    }
-    var observer = new MutationObserver(handler);
-    observer.observe(inRoot, {
-      childList: true,
-      subtree: true
-    });
-    inRoot.__observer = observer;
-  }
-  function upgradeDocument(doc) {
-    doc = wrap(doc);
-    flags.dom && console.group("upgradeDocument: ", doc.baseURI.split("/").pop());
-    addedNode(doc);
-    observe(doc);
-    flags.dom && console.groupEnd();
-  }
-  function upgradeDocumentTree(doc) {
-    forDocumentTree(doc, upgradeDocument);
-  }
-  var originalCreateShadowRoot = Element.prototype.createShadowRoot;
-  Element.prototype.createShadowRoot = function() {
-    var root = originalCreateShadowRoot.call(this);
-    CustomElements.watchShadow(this);
-    return root;
-  };
-  scope.watchShadow = watchShadow;
-  scope.upgradeDocumentTree = upgradeDocumentTree;
-  scope.upgradeSubtree = addedSubtree;
-  scope.upgradeAll = addedNode;
-  scope.attachedNode = attachedNode;
-  scope.takeRecords = takeRecords;
-});
-
-CustomElements.addModule(function(scope) {
-  var flags = scope.flags;
-  function upgrade(node) {
-    if (!node.__upgraded__ && node.nodeType === Node.ELEMENT_NODE) {
-      var is = node.getAttribute("is");
-      var definition = scope.getRegisteredDefinition(is || node.localName);
-      if (definition) {
-        if (is && definition.tag == node.localName) {
-          return upgradeWithDefinition(node, definition);
-        } else if (!is && !definition.extends) {
-          return upgradeWithDefinition(node, definition);
-        }
-      }
-    }
-  }
-  function upgradeWithDefinition(element, definition) {
-    flags.upgrade && console.group("upgrade:", element.localName);
-    if (definition.is) {
-      element.setAttribute("is", definition.is);
-    }
-    implementPrototype(element, definition);
-    element.__upgraded__ = true;
-    created(element);
-    scope.attachedNode(element);
-    scope.upgradeSubtree(element);
-    flags.upgrade && console.groupEnd();
-    return element;
-  }
-  function implementPrototype(element, definition) {
-    if (Object.__proto__) {
-      element.__proto__ = definition.prototype;
-    } else {
-      customMixin(element, definition.prototype, definition.native);
-      element.__proto__ = definition.prototype;
-    }
-  }
-  function customMixin(inTarget, inSrc, inNative) {
-    var used = {};
-    var p = inSrc;
-    while (p !== inNative && p !== HTMLElement.prototype) {
-      var keys = Object.getOwnPropertyNames(p);
-      for (var i = 0, k; k = keys[i]; i++) {
-        if (!used[k]) {
-          Object.defineProperty(inTarget, k, Object.getOwnPropertyDescriptor(p, k));
-          used[k] = 1;
-        }
-      }
-      p = Object.getPrototypeOf(p);
-    }
-  }
-  function created(element) {
-    if (element.createdCallback) {
-      element.createdCallback();
-    }
-  }
-  scope.upgrade = upgrade;
-  scope.upgradeWithDefinition = upgradeWithDefinition;
-  scope.implementPrototype = implementPrototype;
-});
-
-CustomElements.addModule(function(scope) {
-  var upgradeDocumentTree = scope.upgradeDocumentTree;
-  var upgrade = scope.upgrade;
-  var upgradeWithDefinition = scope.upgradeWithDefinition;
-  var implementPrototype = scope.implementPrototype;
-  var useNative = scope.useNative;
-  function register(name, options) {
-    var definition = options || {};
-    if (!name) {
-      throw new Error("document.registerElement: first argument `name` must not be empty");
-    }
-    if (name.indexOf("-") < 0) {
-      throw new Error("document.registerElement: first argument ('name') must contain a dash ('-'). Argument provided was '" + String(name) + "'.");
-    }
-    if (isReservedTag(name)) {
-      throw new Error("Failed to execute 'registerElement' on 'Document': Registration failed for type '" + String(name) + "'. The type name is invalid.");
-    }
-    if (getRegisteredDefinition(name)) {
-      throw new Error("DuplicateDefinitionError: a type with name '" + String(name) + "' is already registered");
-    }
-    if (!definition.prototype) {
-      definition.prototype = Object.create(HTMLElement.prototype);
-    }
-    definition.__name = name.toLowerCase();
-    definition.lifecycle = definition.lifecycle || {};
-    definition.ancestry = ancestry(definition.extends);
-    resolveTagName(definition);
-    resolvePrototypeChain(definition);
-    overrideAttributeApi(definition.prototype);
-    registerDefinition(definition.__name, definition);
-    definition.ctor = generateConstructor(definition);
-    definition.ctor.prototype = definition.prototype;
-    definition.prototype.constructor = definition.ctor;
-    if (scope.ready) {
-      upgradeDocumentTree(document);
-    }
-    return definition.ctor;
-  }
-  function overrideAttributeApi(prototype) {
-    if (prototype.setAttribute._polyfilled) {
-      return;
-    }
-    var setAttribute = prototype.setAttribute;
-    prototype.setAttribute = function(name, value) {
-      changeAttribute.call(this, name, value, setAttribute);
-    };
-    var removeAttribute = prototype.removeAttribute;
-    prototype.removeAttribute = function(name) {
-      changeAttribute.call(this, name, null, removeAttribute);
-    };
-    prototype.setAttribute._polyfilled = true;
-  }
-  function changeAttribute(name, value, operation) {
-    name = name.toLowerCase();
-    var oldValue = this.getAttribute(name);
-    operation.apply(this, arguments);
-    var newValue = this.getAttribute(name);
-    if (this.attributeChangedCallback && newValue !== oldValue) {
-      this.attributeChangedCallback(name, oldValue, newValue);
-    }
-  }
-  function isReservedTag(name) {
-    for (var i = 0; i < reservedTagList.length; i++) {
-      if (name === reservedTagList[i]) {
-        return true;
-      }
-    }
-  }
-  var reservedTagList = [ "annotation-xml", "color-profile", "font-face", "font-face-src", "font-face-uri", "font-face-format", "font-face-name", "missing-glyph" ];
-  function ancestry(extnds) {
-    var extendee = getRegisteredDefinition(extnds);
-    if (extendee) {
-      return ancestry(extendee.extends).concat([ extendee ]);
-    }
-    return [];
-  }
-  function resolveTagName(definition) {
-    var baseTag = definition.extends;
-    for (var i = 0, a; a = definition.ancestry[i]; i++) {
-      baseTag = a.is && a.tag;
-    }
-    definition.tag = baseTag || definition.__name;
-    if (baseTag) {
-      definition.is = definition.__name;
-    }
-  }
-  function resolvePrototypeChain(definition) {
-    if (!Object.__proto__) {
-      var nativePrototype = HTMLElement.prototype;
-      if (definition.is) {
-        var inst = document.createElement(definition.tag);
-        var expectedPrototype = Object.getPrototypeOf(inst);
-        if (expectedPrototype === definition.prototype) {
-          nativePrototype = expectedPrototype;
-        }
-      }
-      var proto = definition.prototype, ancestor;
-      while (proto && proto !== nativePrototype) {
-        ancestor = Object.getPrototypeOf(proto);
-        proto.__proto__ = ancestor;
-        proto = ancestor;
-      }
-      definition.native = nativePrototype;
-    }
-  }
-  function instantiate(definition) {
-    return upgradeWithDefinition(domCreateElement(definition.tag), definition);
-  }
-  var registry = {};
-  function getRegisteredDefinition(name) {
-    if (name) {
-      return registry[name.toLowerCase()];
-    }
-  }
-  function registerDefinition(name, definition) {
-    registry[name] = definition;
-  }
-  function generateConstructor(definition) {
-    return function() {
-      return instantiate(definition);
-    };
-  }
-  var HTML_NAMESPACE = "http://www.w3.org/1999/xhtml";
-  function createElementNS(namespace, tag, typeExtension) {
-    if (namespace === HTML_NAMESPACE) {
-      return createElement(tag, typeExtension);
-    } else {
-      return domCreateElementNS(namespace, tag);
-    }
-  }
-  function createElement(tag, typeExtension) {
-    var definition = getRegisteredDefinition(typeExtension || tag);
-    if (definition) {
-      if (tag == definition.tag && typeExtension == definition.is) {
-        return new definition.ctor();
-      }
-      if (!typeExtension && !definition.is) {
-        return new definition.ctor();
-      }
-    }
-    var element;
-    if (typeExtension) {
-      element = createElement(tag);
-      element.setAttribute("is", typeExtension);
-      return element;
-    }
-    element = domCreateElement(tag);
-    if (tag.indexOf("-") >= 0) {
-      implementPrototype(element, HTMLElement);
-    }
-    return element;
-  }
-  function cloneNode(deep) {
-    var n = domCloneNode.call(this, deep);
-    upgrade(n);
-    return n;
-  }
-  var domCreateElement = document.createElement.bind(document);
-  var domCreateElementNS = document.createElementNS.bind(document);
-  var domCloneNode = Node.prototype.cloneNode;
-  var isInstance;
-  if (!Object.__proto__ && !useNative) {
-    isInstance = function(obj, ctor) {
-      var p = obj;
-      while (p) {
-        if (p === ctor.prototype) {
-          return true;
-        }
-        p = p.__proto__;
-      }
-      return false;
-    };
-  } else {
-    isInstance = function(obj, base) {
-      return obj instanceof base;
-    };
-  }
-  document.registerElement = register;
-  document.createElement = createElement;
-  document.createElementNS = createElementNS;
-  Node.prototype.cloneNode = cloneNode;
-  scope.registry = registry;
-  scope.instanceof = isInstance;
-  scope.reservedTagList = reservedTagList;
-  scope.getRegisteredDefinition = getRegisteredDefinition;
-  document.register = document.registerElement;
-});
-
-(function(scope) {
-  var useNative = scope.useNative;
-  var initializeModules = scope.initializeModules;
-  if (useNative) {
-    var nop = function() {};
-    scope.watchShadow = nop;
-    scope.upgrade = nop;
-    scope.upgradeAll = nop;
-    scope.upgradeDocumentTree = nop;
-    scope.upgradeSubtree = nop;
-    scope.takeRecords = nop;
-    scope.instanceof = function(obj, base) {
-      return obj instanceof base;
-    };
-  } else {
-    initializeModules();
-  }
-  var upgradeDocumentTree = scope.upgradeDocumentTree;
-  if (!window.wrap) {
-    if (window.ShadowDOMPolyfill) {
-      window.wrap = ShadowDOMPolyfill.wrapIfNeeded;
-      window.unwrap = ShadowDOMPolyfill.unwrapIfNeeded;
-    } else {
-      window.wrap = window.unwrap = function(node) {
-        return node;
-      };
-    }
-  }
-  function bootstrap() {
-    upgradeDocumentTree(wrap(document));
-    if (window.HTMLImports) {
-      HTMLImports.__importsParsingHook = function(elt) {
-        upgradeDocumentTree(wrap(elt.import));
-      };
-    }
-    CustomElements.ready = true;
-    setTimeout(function() {
-      CustomElements.readyTime = Date.now();
-      if (window.HTMLImports) {
-        CustomElements.elapsed = CustomElements.readyTime - HTMLImports.readyTime;
-      }
-      document.dispatchEvent(new CustomEvent("WebComponentsReady", {
-        bubbles: true
-      }));
-    });
-  }
-  if (typeof window.CustomEvent !== "function") {
-    window.CustomEvent = function(inType, params) {
-      params = params || {};
-      var e = document.createEvent("CustomEvent");
-      e.initCustomEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable), params.detail);
-      return e;
-    };
-    window.CustomEvent.prototype = window.Event.prototype;
-  }
-  if (document.readyState === "complete" || scope.flags.eager) {
-    bootstrap();
-  } else if (document.readyState === "interactive" && !window.attachEvent && (!window.HTMLImports || window.HTMLImports.ready)) {
-    bootstrap();
-  } else {
-    var loadEvent = window.HTMLImports && !HTMLImports.ready ? "HTMLImportsLoaded" : "DOMContentLoaded";
-    window.addEventListener(loadEvent, bootstrap);
-  }
-})(window.CustomElements);
-
-(function(scope) {
-  if (!Function.prototype.bind) {
-    Function.prototype.bind = function(scope) {
-      var self = this;
-      var args = Array.prototype.slice.call(arguments, 1);
-      return function() {
-        var args2 = args.slice();
-        args2.push.apply(args2, arguments);
-        return self.apply(scope, args2);
-      };
-    };
-  }
-})(window.WebComponents);
-
-(function(scope) {
-  "use strict";
-  if (!window.performance) {
-    var start = Date.now();
-    window.performance = {
-      now: function() {
-        return Date.now() - start;
-      }
-    };
-  }
-  if (!window.requestAnimationFrame) {
-    window.requestAnimationFrame = function() {
-      var nativeRaf = window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame;
-      return nativeRaf ? function(callback) {
-        return nativeRaf(function() {
-          callback(performance.now());
-        });
-      } : function(callback) {
-        return window.setTimeout(callback, 1e3 / 60);
-      };
-    }();
-  }
-  if (!window.cancelAnimationFrame) {
-    window.cancelAnimationFrame = function() {
-      return window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || function(id) {
-        clearTimeout(id);
-      };
-    }();
-  }
-  var elementDeclarations = [];
-  var polymerStub = function(name, dictionary) {
-    if (typeof name !== "string" && arguments.length === 1) {
-      Array.prototype.push.call(arguments, document._currentScript);
-    }
-    elementDeclarations.push(arguments);
-  };
-  window.Polymer = polymerStub;
-  scope.consumeDeclarations = function(callback) {
-    scope.consumeDeclarations = function() {
-      throw "Possible attempt to load Polymer twice";
-    };
-    if (callback) {
-      callback(elementDeclarations);
-    }
-    elementDeclarations = null;
-  };
-  function installPolymerWarning() {
-    if (window.Polymer === polymerStub) {
-      window.Polymer = function() {
-        throw new Error("You tried to use polymer without loading it first. To " + 'load polymer, <link rel="import" href="' + 'components/polymer/polymer.html">');
-      };
-    }
-  }
-  if (HTMLImports.useNative) {
-    installPolymerWarning();
-  } else {
-    addEventListener("DOMContentLoaded", installPolymerWarning);
-  }
-})(window.WebComponents);
-
-(function(scope) {
-  var style = document.createElement("style");
-  style.textContent = "" + "body {" + "transition: opacity ease-in 0.2s;" + " } \n" + "body[unresolved] {" + "opacity: 0; display: block; overflow: hidden; position: relative;" + " } \n";
-  var head = document.querySelector("head");
-  head.insertBefore(style, head.firstChild);
-})(window.WebComponents);
-
-(function(scope) {
-  window.Platform = scope;
-})(window.WebComponents);
-
-if (typeof exports !== 'undefined') {
-  module.exports = window.WebComponents;
-}
diff --git a/src/renderers/dom/fiber/ReactDOMFiberEntry.js b/src/renderers/dom/fiber/ReactDOMFiberEntry.js
index aca08cbb0d29e..0e0559d47a1d7 100644
--- a/src/renderers/dom/fiber/ReactDOMFiberEntry.js
+++ b/src/renderers/dom/fiber/ReactDOMFiberEntry.js
@@ -163,17 +163,24 @@ var DOMRenderer = ReactFiberReconciler({
   getRootHostContext(rootContainerInstance: Container): HostContext {
     let type;
     let namespace;
-    if (rootContainerInstance.nodeType === DOCUMENT_NODE) {
-      type = '#document';
-      let root = (rootContainerInstance: any).documentElement;
-      namespace = root ? root.namespaceURI : getChildNamespace(null, '');
-    } else {
-      const container: any = rootContainerInstance.nodeType === COMMENT_NODE
-        ? rootContainerInstance.parentNode
-        : rootContainerInstance;
-      const ownNamespace = container.namespaceURI || null;
-      type = container.tagName;
-      namespace = getChildNamespace(ownNamespace, type);
+    const nodeType = rootContainerInstance.nodeType;
+    switch (nodeType) {
+      case DOCUMENT_NODE:
+      case DOCUMENT_FRAGMENT_NODE: {
+        type = nodeType === DOCUMENT_NODE ? '#document' : '#fragment';
+        let root = (rootContainerInstance: any).documentElement;
+        namespace = root ? root.namespaceURI : getChildNamespace(null, '');
+        break;
+      }
+      default: {
+        const container: any = nodeType === COMMENT_NODE
+          ? rootContainerInstance.parentNode
+          : rootContainerInstance;
+        const ownNamespace = container.namespaceURI || null;
+        type = container.tagName;
+        namespace = getChildNamespace(ownNamespace, type);
+        break;
+      }
     }
     if (__DEV__) {
       const validatedTag = type.toLowerCase();
diff --git a/src/renderers/dom/shared/__tests__/ReactMount-test.js b/src/renderers/dom/shared/__tests__/ReactMount-test.js
index d895ad9897ab9..88afe072343a3 100644
--- a/src/renderers/dom/shared/__tests__/ReactMount-test.js
+++ b/src/renderers/dom/shared/__tests__/ReactMount-test.js
@@ -17,7 +17,6 @@ var React;
 var ReactDOM;
 var ReactDOMServer;
 var ReactTestUtils;
-var WebComponents;
 
 describe('ReactMount', () => {
   beforeEach(() => {
@@ -27,16 +26,6 @@ describe('ReactMount', () => {
     ReactDOM = require('react-dom');
     ReactDOMServer = require('react-dom/server');
     ReactTestUtils = require('react-dom/test-utils');
-
-    try {
-      if (WebComponents === undefined && typeof jest !== 'undefined') {
-        WebComponents = require('WebComponents');
-      }
-    } catch (e) {
-      // Parse error expected on engines that don't support setters
-      // or otherwise aren't supportable by the polyfill.
-      // Leave WebComponents undefined.
-    }
   });
 
   describe('unmountComponentAtNode', () => {
@@ -201,29 +190,6 @@ describe('ReactMount', () => {
     );
   });
 
-  if (WebComponents !== undefined) {
-    it('should allow mounting/unmounting to document fragment container', () => {
-      var shadowRoot;
-      var proto = Object.create(HTMLElement.prototype, {
-        createdCallback: {
-          value: function() {
-            shadowRoot = this.createShadowRoot();
-            ReactDOM.render(<div>Hi, from within a WC!</div>, shadowRoot);
-            expect(shadowRoot.firstChild.tagName).toBe('DIV');
-            ReactDOM.render(<span>Hi, from within a WC!</span>, shadowRoot);
-            expect(shadowRoot.firstChild.tagName).toBe('SPAN');
-          },
-        },
-      });
-      proto.unmount = function() {
-        ReactDOM.unmountComponentAtNode(shadowRoot);
-      };
-      document.registerElement('x-foo', {prototype: proto});
-      var element = document.createElement('x-foo');
-      element.unmount();
-    });
-  }
-
   it('should warn if render removes React-rendered children', () => {
     var container = document.createElement('container');