Support fullscreen for non-video elements in the WebView.

content/public/android/java/src/org/chromium/content/browser/ContentViewClient.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 android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.Intent;
 import android.util.Log;
@@ skipping 191 matching lines @@
             keyCode == KeyEvent.KEYCODE_HEADSETHOOK ||
             keyCode == KeyEvent.KEYCODE_CAMERA ||
             keyCode == KeyEvent.KEYCODE_FOCUS ||
             keyCode == KeyEvent.KEYCODE_VOLUME_DOWN ||
             keyCode == KeyEvent.KEYCODE_VOLUME_MUTE ||
             keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
             return false;
         }
         return true;
     }
+
+    /**
+     * Called when a non-video element has entered fullscreen. For video elements see
+     * {@link ContentVideoViewClient#enterFullscreenVideo(android.view.View)}.
+     */
+    public void enterFullscreen() { }
+
+    /**
+     * Called when a non-video element has exited fullscreen. For video elements see
+     * {@link ContentVideoViewClient#exitFullscreenVideo()}.
+     */
+    public void exitFullscreen() { }
 }