Move IPC::MessageFilter and router to a separate file

content/renderer/media/android/renderer_demuxer_android.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 "content/renderer/media/android/renderer_demuxer_android.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
+#include "base/message_loop/message_loop_proxy.h"
 #include "content/child/thread_safe_sender.h"
 #include "content/common/media/media_player_messages_android.h"
 #include "content/renderer/media/android/media_source_delegate.h"
 #include "content/renderer/media/android/renderer_media_player_manager.h"
 #include "content/renderer/media/android/webmediaplayer_android.h"
 #include "content/renderer/render_thread_impl.h"
 
 namespace content {
 
 RendererDemuxerAndroid::RendererDemuxerAndroid()
@@ skipping 83 matching lines @@
     delegate->Seek(time_to_seek, is_browser_seek);
 }
 
 void RendererDemuxerAndroid::OnMediaConfigRequest(int demuxer_client_id) {
   MediaSourceDelegate* delegate = delegates_.Lookup(demuxer_client_id);
   if (delegate)
     delegate->OnMediaConfigRequest();
 }
 
 }  // namespace content