Reverted the code for the non-interactive audible tab notification

chrome/browser/media/android/remote/remote_media_player_manager.h

 // 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.
 
 #ifndef CHROME_BROWSER_MEDIA_ANDROID_REMOTE_REMOTE_MEDIA_PLAYER_MANAGER_H_
 #define CHROME_BROWSER_MEDIA_ANDROID_REMOTE_REMOTE_MEDIA_PLAYER_MANAGER_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "chrome/browser/media/android/remote/remote_media_player_bridge.h"
 #include "content/browser/media/android/browser_media_player_manager.h"
 #include "media/base/android/media_player_android.h"
 
 struct MediaPlayerHostMsg_Initialize_Params;
 
 namespace remote_media {
 
 // media::MediaPlayerManager implementation that allows the user to play media
 // remotely.
 class RemoteMediaPlayerManager : public content::BrowserMediaPlayerManager {
  public:
-  RemoteMediaPlayerManager(
-      content::RenderFrameHost* render_frame_host,
-      content::MediaPlayersObserver* audio_monitor);
+  explicit RemoteMediaPlayerManager(
+      content::RenderFrameHost* render_frame_host);
   ~RemoteMediaPlayerManager() override;
 
   void OnPlaying(int player_id);
   void OnPaused(int player_id);
 
   // Callback to trigger when a remote device has been selected.
   void OnRemoteDeviceSelected(int player_id);
 
   // Callback to trigger when a remote device has been unselected.
   void OnRemoteDeviceUnselected(int player_id);
@@ skipping 69 matching lines @@
   ScopedVector<RemoteMediaPlayerBridge> remote_players_;
 
   base::WeakPtrFactory<RemoteMediaPlayerManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RemoteMediaPlayerManager);
 };
 
 } // namespace remote_media
 
 #endif  // CHROME_BROWSER_MEDIA_ANDROID_REMOTE_REMOTE_MEDIA_PLAYER_MANAGER_H_