Make WebContentsObserver pass more calls to Java.

content/public/android/java/src/org/chromium/content/browser/WebContentsObserver.java

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.content.browser;
 
 import org.chromium.base.CalledByNative;
 import org.chromium.base.JNINamespace;
 import org.chromium.base.ThreadUtils;
 import org.chromium.content_public.browser.WebContents;
 
 /**
  * This class receives callbacks that act as hooks for various a native web contents events related
  * to loading a url. A single web contents can have multiple WebContentObservers.
  */
 @JNINamespace("content")
 public abstract class WebContentsObserver {
     private long mNativeWebContentsObserverAndroid;
 
     public WebContentsObserver(WebContents webContents) {
         ThreadUtils.assertOnUiThread();
         mNativeWebContentsObserverAndroid = nativeInit(webContents);
     }
 
+    /**
+     * Called when the RenderView of the current RenderViewHost is ready, e.g. because we recreated
+     * it after a crash.
+     */
+    @CalledByNative
+    public void renderViewReady() {
+    }
+
     @CalledByNative
     public void renderProcessGone(boolean wasOomProtected) {
     }
 
     /**
      * Called when the a page starts loading.
      * @param url The validated url for the loading page.
      */
     @CalledByNative
     public void didStartLoading(String url) {
@@ skipping 57 matching lines @@
      * Similar to didNavigateMainFrame but also called on subframe navigations.
      * @param url The validated url for the page.
      * @param baseUrl The validated base url for the page.
      * @param isReload True if this navigation is a reload.
      */
     @CalledByNative
     public void didNavigateAnyFrame(String url, String baseUrl, boolean isReload) {
     }
 
     /**
+     * Called once the window.document object of the main frame was created.
+     */
+    @CalledByNative
+    public void documentAvailableInMainFrame() {
+    }
+
+    /**
      * Notifies that a load is started for a given frame.
      * @param frameId A positive, non-zero integer identifying the navigating frame.
      * @param parentFrameId The frame identifier of the frame containing the navigating frame,
      *                      or -1 if the frame is not contained in another frame.
      * @param isMainFrame Whether the load is happening for the main frame.
      * @param validatedUrl The validated URL that is being navigated to.
      * @param isErrorPage Whether this is navigating to an error page.
      * @param isIframeSrcdoc Whether this is navigating to about:srcdoc.
      */
     @CalledByNative
@@ skipping 75 matching lines @@
     public void detachFromWebContents() {
         if (mNativeWebContentsObserverAndroid != 0) {
             nativeDestroy(mNativeWebContentsObserverAndroid);
             mNativeWebContentsObserverAndroid = 0;
         }
     }
 
     private native long nativeInit(WebContents webContents);
     private native void nativeDestroy(long nativeWebContentsObserverAndroid);
 }