Revert of Added stub MediaSourcePlayer for developing behind the flag

media/base/android/media_player_android.cc

 // 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.
 
 #include "media/base/android/media_player_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 63 matching lines @@
   jobject j_context = base::android::GetApplicationContext();
   DCHECK(j_context);
 
   listener_->CreateMediaPlayerListener(j_context, j_media_player);
 }
 
 void MediaPlayerAndroid::DetachListener() {
   listener_->ReleaseMediaPlayerListenerResources();
 }
 
-void MediaPlayerAndroid::DestroyListenerOnUIThread() {
-  weak_factory_.InvalidateWeakPtrs();
-  listener_.reset();
-}
-
 void MediaPlayerAndroid::SetAudible(bool is_audible) {
   if (is_audible_ != is_audible) {
     is_audible_ = is_audible;
     manager_->OnAudibleStateChanged(player_id(), is_audible_);
   }
 }
 
 }  // namespace media