Rename java WebContentsObserverAndroid to WebContentsObserver

chrome/android/java/src/org/chromium/chrome/browser/TabObserver.java

 // Copyright 2013 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.chrome.browser;
 
 import android.view.ContextMenu;
 
 import org.chromium.content.browser.ContentViewCore;
 
@@ skipping 100 matching lines @@
      */
     void onUpdateUrl(Tab tab, String url);
 
     /**
      * Called when the {@link Tab} should enter or leave fullscreen mode.
      * @param tab    The notifying {@link Tab}.
      * @param enable Whether or not to enter fullscreen mode.
      */
     void onToggleFullscreenMode(Tab tab, boolean enable);
 
-    // WebContentsObserverAndroid methods ---------------------------------------------------------
+    // WebContentsObserver methods ---------------------------------------------------------
 
     /**
      * Called when an error occurs while loading a page and/or the page fails to load.
      * @param tab               The notifying {@link Tab}.
      * @param isProvisionalLoad Whether the failed load occurred during the provisional load.
      * @param isMainFrame       Whether failed load happened for the main frame.
      * @param errorCode         Code for the occurring error.
      * @param description       The description for the error.
      * @param failingUrl        The url that was loading when the error occurred.
      */
@@ skipping 15 matching lines @@
     public void onDidStartProvisionalLoadForFrame(
             Tab tab, long frameId, long parentFrameId, boolean isMainFrame, String validatedUrl,
             boolean isErrorPage, boolean isIframeSrcdoc);
 
     /**
      * Called when the theme color is changed
      * @param color the new color in ARGB format.
      */
     public void onDidChangeThemeColor(int color);
 }