[import.meta.url] Implement import.meta.url behind flag (Blink-side)

This CL implements https://html.spec.whatwg.org/#hostgetimportmetaproperties as HostGetImportMetaProperties() in V8Initializer.cpp and Modulator, and thus enables import.meta.url behind the flag added in https://chromium-review.googlesource.com/c/chromium/src/+/727179. This CL also adds a layout test, and sets up virtual test for that. Bug: 773713 Change-Id: I1d28123f803095535ed9a0208587e1dd873376cb
web-platform-tests · Oct 23, 2017 · 80b3df6 · 80b3df6
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diff --git a/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-dependent.js b/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-dependent.js
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+export let importMetaOnDependentModule = import.meta;
diff --git a/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-root.js b/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-root.js
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+export let importMetaOnRootModule = import.meta;
+export { importMetaOnDependentModule } from "./import-meta-dependent.js";
diff --git a/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-url.html b/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-url.html
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+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script type="module">
+import { importMetaOnRootModule, importMetaOnDependentModule }
+    from "./import-meta-root.js";
+
+var base = location.href.slice(0, location.href.lastIndexOf('/'));
+
+test(() => {
+  assert_equals(import.meta.url, location.href);
+}, "import.meta.url in a root inline script");
+
+test(() => {
+  assert_equals(importMetaOnRootModule.url,
+                base + "/import-meta-root.js");
+}, "import.meta.url in a root external script");
+
+test(() => {
+  assert_equals(importMetaOnDependentModule.url,
+                base + "/import-meta-dependent.js");
+}, "import.meta.url in a dependent external script");
+</script>
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		export let importMetaOnDependentModule = import.meta;
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		export let importMetaOnRootModule = import.meta;
		export { importMetaOnDependentModule } from "./import-meta-dependent.js";