Enable seek in fullscreen mode for MSE impl on android

webkit/media/android/webmediaplayer_android.h

Index: webkit/media/android/webmediaplayer_android.h
diff --git a/webkit/media/android/webmediaplayer_android.h b/webkit/media/android/webmediaplayer_android.h
index c492910e9422ef6bbb4d75d529864e270a2d1952..b1e8d91d9bc5b772577fae47c616a643199b3a0b 100644
--- a/webkit/media/android/webmediaplayer_android.h
+++ b/webkit/media/android/webmediaplayer_android.h
@@ -147,16 +147,17 @@ class WebMediaPlayerAndroid
       OVERRIDE;
 
   // Media player callback handlers.
-  virtual void OnMediaMetadataChanged(base::TimeDelta duration, int width,
-                                      int height, bool success);
-  virtual void OnPlaybackComplete();
-  virtual void OnBufferingUpdate(int percentage);
-  virtual void OnSeekComplete(base::TimeDelta current_time);
-  virtual void OnMediaError(int error_type);
-  virtual void OnVideoSizeChanged(int width, int height);
+  void OnMediaMetadataChanged(base::TimeDelta duration, int width,
+                              int height, bool success);
+  void OnPlaybackComplete();
+  void OnBufferingUpdate(int percentage);
+  void OnSeekComplete(base::TimeDelta current_time);
+  void OnMediaError(int error_type);
+  void OnVideoSizeChanged(int width, int height);
+  void OnMediaSeekRequest(base::TimeDelta time_to_seek);
 
   // Called to update the current time.
-  virtual void OnTimeUpdate(base::TimeDelta current_time);
+  void OnTimeUpdate(base::TimeDelta current_time);
 
   // Functions called when media player status changes.
   void OnMediaPlayerPlay();