Reverted the code for the non-interactive audible tab notification

media/base/android/media_player_android.h

 // Copyright (c) 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.
 
 #ifndef MEDIA_BASE_ANDROID_MEDIA_PLAYER_ANDROID_H_
 #define MEDIA_BASE_ANDROID_MEDIA_PLAYER_ANDROID_H_
 
 #include <jni.h>
 #include <string>
 
@@ skipping 102 matching lines @@
   virtual void OnBufferingUpdate(int percent);
   virtual void OnPlaybackComplete();
   virtual void OnMediaInterrupted();
   virtual void OnSeekComplete();
   virtual void OnMediaPrepared();
 
   // When destroying a subclassed object on a non-UI thread
   // it is still required to destroy the |listener_| related stuff
   // on the UI thread.
   void DestroyListenerOnUIThread();
-  void SetAudible(bool is_audible);
 
   MediaPlayerManager* manager() { return manager_; }
 
   base::WeakPtr<MediaPlayerAndroid> WeakPtrForUIThread();
 
   RequestMediaResourcesCB request_media_resources_cb_;
 
  private:
   friend class MediaPlayerListener;
 
   // Player ID assigned to this player.
   int player_id_;
 
   // Resource manager for all the media players.
   MediaPlayerManager* manager_;
 
   // Url for the frame that contains this player.
   GURL frame_url_;
 
   // Listener object that listens to all the media player events.
   scoped_ptr<MediaPlayerListener> listener_;
 
-  // Maintains the audible state of the player, true if it is playing sound.
-  bool is_audible_;
-
   // Weak pointer passed to |listener_| for callbacks.
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<MediaPlayerAndroid> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaPlayerAndroid);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_ANDROID_MEDIA_PLAYER_ANDROID_H_