Delete browser MSE implementation.

content/browser/media/android/media_player_renderer.h

 // Copyright 2016 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 CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_PLAYER_RENDERER_H_
 #define CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_PLAYER_RENDERER_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 60 matching lines @@
                               int width,
                               int height,
                               bool success) override;
   void OnPlaybackComplete(int player_id) override;
   void OnMediaInterrupted(int player_id) override;
   void OnBufferingUpdate(int player_id, int percentage) override;
   void OnSeekComplete(int player_id,
                       const base::TimeDelta& current_time) override;
   void OnError(int player_id, int error) override;
   void OnVideoSizeChanged(int player_id, int width, int height) override;
-  void OnWaitingForDecryptionKey(int player_id) override;
   media::MediaPlayerAndroid* GetFullscreenPlayer() override;
   media::MediaPlayerAndroid* GetPlayer(int player_id) override;
   bool RequestPlay(int player_id,
                    base::TimeDelta duration,
                    bool has_audio) override;
 
  private:
   // Used when creating |media_player_|.
   void OnDecoderResourcesReleased(int player_id);
 
@@ skipping 14 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<MediaPlayerRenderer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaPlayerRenderer);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_PLAYER_RENDERER_H_