Refactor MSE implementation on Android to simplify the logic and improve the performance

content/renderer/media/android/renderer_demuxer_android.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 CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_DEMUXER_ANDROID_H_
 #define CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_DEMUXER_ANDROID_H_
 
 #include "base/atomic_sequence_num.h"
 #include "base/id_map.h"
 #include "ipc/ipc_channel_proxy.h"
@@ skipping 48 matching lines @@
   friend class base::RefCountedThreadSafe<RendererDemuxerAndroid>;
   virtual ~RendererDemuxerAndroid();
 
  private:
   void DispatchMessage(const IPC::Message& message);
   void OnReadFromDemuxer(int demuxer_client_id,
                          media::DemuxerStream::Type type);
   void OnDemuxerSeekRequest(int demuxer_client_id,
                             const base::TimeDelta& time_to_seek,
                             bool is_browser_seek);
-  void OnMediaConfigRequest(int demuxer_client_id);
 
   base::AtomicSequenceNumber next_demuxer_client_id_;
 
   IDMap<MediaSourceDelegate> delegates_;
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
   scoped_refptr<base::MessageLoopProxy> media_message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererDemuxerAndroid);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_DEMUXER_ANDROID_H_