Refactor: Remove AsyncDevSupportManager.loadJSBundleFromServer

Summary:
## Rationale
- AsyncDevSupportManager.loadSplitBundleFromServer() is an override of DevSupportManager.loadSplitBundleFromServer(), which is used by the bridge. However, AsyncDevSupportManager.loadJSBundleFromServer() has no bridge analogue. This is confusing: Are the methods in AsyncDevSupportManager Venice overrides for bridge related methods? It's easy to think yes, but the answer is no.
- AsyncDevSupportManager.loadJSBundleFromServer() is an additional layer of indirection that provides very little value: all it does it create the JSBundleLoader, and call onReactContextCreated. However, it does so in 11 lines of very confusing code.

A discussion we don't have to have now: Inheritance hierarchies are very difficult to understand and de-tangle. So, instead of using inheritance to make DevSupportManager work with Venice (via AsyncDevSupportManager), should we just refactor DevSupportManager so that it can be customized to work with Venice?

Changelog: [Internal]

Reviewed By: JoshuaGross, mdvacca

Differential Revision: D27577591

fbshipit-source-id: b64dcd65e9a7c85b89443d860d441a0635547916

ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerBase.java

@@ -43,6 +43,7 @@
 import com.facebook.react.common.ShakeDetector;
 import com.facebook.react.common.futures.SimpleSettableFuture;
 import com.facebook.react.devsupport.DevServerHelper.PackagerCommandListener;
+import com.facebook.react.devsupport.interfaces.BundleLoadCallback;
 import com.facebook.react.devsupport.interfaces.DevBundleDownloadListener;
 import com.facebook.react.devsupport.interfaces.DevOptionHandler;
 import com.facebook.react.devsupport.interfaces.DevSplitBundleCallback;
@@ -1151,11 +1152,7 @@ public void run() {
         });
   }
 
-  protected interface BundleLoadCallback {
-    void onSuccess();
-  }
-
-  protected void reloadJSFromServer(final String bundleURL, final BundleLoadCallback callback) {
+  public void reloadJSFromServer(final String bundleURL, final BundleLoadCallback callback) {
     ReactMarker.logMarker(ReactMarkerConstants.DOWNLOAD_START);
 
     mDevLoadingViewController.showForUrl(bundleURL);

ReactAndroid/src/main/java/com/facebook/react/devsupport/DisabledDevSupportManager.java

@@ -12,6 +12,7 @@
 import com.facebook.react.bridge.DefaultNativeModuleCallExceptionHandler;
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.devsupport.interfaces.BundleLoadCallback;
 import com.facebook.react.devsupport.interfaces.DevOptionHandler;
 import com.facebook.react.devsupport.interfaces.DevSplitBundleCallback;
 import com.facebook.react.devsupport.interfaces.DevSupportManager;
@@ -131,6 +132,9 @@ public void handleReloadJS() {}
   @Override
   public void reloadJSFromServer(String bundleURL) {}
 
+  @Override
+  public void reloadJSFromServer(final String bundleURL, final BundleLoadCallback callback) {}
+
   @Override
   public void loadSplitBundleFromServer(String bundlePath, DevSplitBundleCallback callback) {}
 

ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/BundleLoadCallback.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.devsupport.interfaces;
+
+public interface BundleLoadCallback {
+  void onSuccess();
+}

ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevSupportManager.java

@@ -69,6 +69,8 @@ public interface DevSupportManager extends NativeModuleCallExceptionHandler {
 
   void reloadJSFromServer(final String bundleURL);
 
+  void reloadJSFromServer(final String bundleURL, final BundleLoadCallback callback);
+
   void loadSplitBundleFromServer(String bundlePath, DevSplitBundleCallback callback);
 
   void isPackagerRunning(PackagerStatusCallback callback);