Move IPC::MessageFilter and router to a separate file

win8/viewer/metro_viewer_process_host.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 "win8/viewer/metro_viewer_process_host.h"
 
 #include <shlobj.h>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/path_service.h"
 #include "base/process/process.h"
 #include "base/process/process_handle.h"
 #include "base/strings/string16.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/time/time.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/windows_version.h"
+#include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_message_macros.h"
 #include "ui/aura/remote_window_tree_host_win.h"
 #include "ui/metro_viewer/metro_viewer_messages.h"
 #include "win8/viewer/metro_viewer_constants.h"
 
 namespace {
 
 const int kViewerProcessConnectionTimeoutSecs = 60;
 
@@ skipping 107 matching lines @@
   return handled ? true :
       aura::RemoteWindowTreeHostWin::Instance()->OnMessageReceived(message);
 }
 
 void MetroViewerProcessHost::NotifyChannelConnected() {
   if (channel_connected_event_)
     channel_connected_event_->Signal();
 }
 
 }  // namespace win8