Move IPC::MessageFilter and router to a separate file

content/renderer/p2p/socket_dispatcher.cc

 // Copyright (c) 2012 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/p2p/socket_dispatcher.h"
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "content/child/child_process.h"
 #include "content/common/p2p_messages.h"
 #include "content/renderer/p2p/host_address_request.h"
 #include "content/renderer/p2p/network_list_observer.h"
 #include "content/renderer/p2p/socket_client_impl.h"
 #include "content/renderer/render_view_impl.h"
+#include "ipc/ipc_channel.h"
 
 namespace content {
 
 P2PSocketDispatcher::P2PSocketDispatcher(
     base::MessageLoopProxy* ipc_message_loop)
     : message_loop_(ipc_message_loop),
       network_notifications_started_(false),
       network_list_observers_(
           new ObserverListThreadSafe<NetworkListObserver>()),
       channel_(NULL) {
@@ skipping 158 matching lines @@
     // hasn't processed the close message by the time it sends the
     // message to the renderer.
     VLOG(1) << "Received P2P message for socket that doesn't exist.";
     return NULL;
   }
 
   return client;
 }
 
 }  // namespace content