Reverted the code for the non-interactive audible tab notification

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

 // 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.
 
 #include "chrome/browser/media/android/remote/remote_media_player_manager.h"
 
 #include "chrome/browser/android/tab_android.h"
 #include "chrome/common/chrome_content_client.h"
 #include "content/common/media/media_player_messages_android.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/android/java_bitmap.h"
 
 using media::MediaPlayerAndroid;
 
 namespace remote_media {
 
 RemoteMediaPlayerManager::RemoteMediaPlayerManager(
-    content::RenderFrameHost* render_frame_host,
-    content::MediaPlayersObserver* audio_monitor)
-    : BrowserMediaPlayerManager(render_frame_host, audio_monitor),
+    content::RenderFrameHost* render_frame_host)
+    : BrowserMediaPlayerManager(render_frame_host),
       weak_ptr_factory_(this) {
 }
 
 RemoteMediaPlayerManager::~RemoteMediaPlayerManager() {}
 
 void RemoteMediaPlayerManager::OnStart(int player_id) {
   // TODO(aberent) This assumes this is the first time we have started this
   // video, rather than restarting after pause. There is a lot of logic here
   // that is unnecessary if we are restarting after pause.
   if (MaybeStartPlayingRemotely(player_id))
@@ skipping 270 matching lines @@
         RoutingID(), player_id, duration,
         replaced_local_player_->GetVideoWidth(),
         replaced_local_player_->GetVideoHeight(), success));
   } else {
     BrowserMediaPlayerManager::OnMediaMetadataChanged(player_id, duration,
                                                       width, height, success);
   }
 }
 
 } // namespace remote_media