Move IPC::MessageFilter and router to a separate file

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"
+#include "ipc/ipc_message_filter.h"
 #include "media/base/android/demuxer_stream_player_params.h"
 
 namespace content {
 
 class MediaSourceDelegate;
 class ThreadSafeSender;
 
 // Represents the renderer process half of an IPC-based implementation of
 // media::DemuxerAndroid.
 //
 // Refer to BrowserDemuxerAndroid for the browser process half.
-class RendererDemuxerAndroid : public IPC::ChannelProxy::MessageFilter {
+class RendererDemuxerAndroid : public IPC::MessageFilter {
  public:
   RendererDemuxerAndroid();
 
   // Returns the next available demuxer client ID for use in IPC messages.
   //
   // Safe to call on any thread.
   int GetNextDemuxerClientID();
 
   // Associates |delegate| with |demuxer_client_id| for handling incoming IPC
   // messages.
   //
   // Must be called on media thread.
   void AddDelegate(int demuxer_client_id, MediaSourceDelegate* delegate);
 
   // Removes the association created by AddDelegate().
   //
   // Must be called on media thread.
   void RemoveDelegate(int demuxer_client_id);
 
-  // IPC::ChannelProxy::MessageFilter overrides.
+  // IPC::MessageFilter overrides.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // media::DemuxerAndroidClient "implementation".
   //
   // TODO(scherkus): Consider having RendererDemuxerAndroid actually implement
   // media::DemuxerAndroidClient and MediaSourceDelegate actually implement
   // media::DemuxerAndroid.
   void DemuxerReady(int demuxer_client_id,
                     const media::DemuxerConfigs& configs);
   void ReadFromDemuxerAck(int demuxer_client_id,
@@ skipping 20 matching lines @@
   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_