Move IPC::MessageFilter and router to a separate file

content/renderer/dom_storage/dom_storage_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/dom_storage/dom_storage_dispatcher.h"
 
 #include <list>
 #include <map>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/synchronization/lock.h"
 #include "content/common/dom_storage/dom_storage_messages.h"
 #include "content/common/dom_storage/dom_storage_types.h"
 #include "content/renderer/dom_storage/dom_storage_cached_area.h"
 #include "content/renderer/dom_storage/dom_storage_proxy.h"
 #include "content/renderer/dom_storage/webstoragearea_impl.h"
 #include "content/renderer/dom_storage/webstoragenamespace_impl.h"
 #include "content/renderer/render_thread_impl.h"
+#include "ipc/message_filter.h"
 #include "third_party/WebKit/public/platform/Platform.h"
 #include "third_party/WebKit/public/web/WebKit.h"
 #include "third_party/WebKit/public/web/WebStorageEventDispatcher.h"
 
 namespace content {
 
 namespace {
 // MessageThrottlingFilter -------------------------------------------
 // Used to limit the number of ipc messages pending completion so we
 // don't overwhelm the main browser process. When the limit is reached,
 // a synchronous message is sent to flush all pending messages thru.
 // We expect to receive an 'ack' for each message sent. This object
 // observes receipt of the acks on the IPC thread to decrement a counter.
-class MessageThrottlingFilter : public IPC::ChannelProxy::MessageFilter {
+class MessageThrottlingFilter : public IPC::MessageFilter {
  public:
   explicit MessageThrottlingFilter(RenderThreadImpl* sender)
       : pending_count_(0), sender_(sender) {}
 
   void SendThrottled(IPC::Message* message);
   void Shutdown() { sender_ = NULL; }
 
  private:
   virtual ~MessageThrottlingFilter() {}
 
@@ skipping 311 matching lines @@
 
 void DomStorageDispatcher::OnAsyncOperationComplete(bool success) {
   proxy_->CompleteOnePendingCallback(success);
 }
 
 void DomStorageDispatcher::OnResetCachedValues(int64 namespace_id) {
   proxy_->ResetAllCachedAreas(namespace_id);
 }
 
 }  // namespace content