Move IPC::MessageFilter and router to a separate file

content/common/gpu/gpu_channel.h

 // 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.
 
 #ifndef CONTENT_COMMON_GPU_GPU_CHANNEL_H_
 #define CONTENT_COMMON_GPU_GPU_CHANNEL_H_
 
 #include <deque>
 #include <string>
 
@@ skipping 20 matching lines @@
 class WaitableEvent;
 }
 
 namespace gpu {
 class PreemptionFlag;
 namespace gles2 {
 class ImageManager;
 }
 }
 
+namespace IPC {
+class MessageFilter;
+}
+
 namespace content {
 class DevToolsGpuAgent;
 class GpuChannelManager;
 class GpuChannelMessageFilter;
 class GpuWatchdog;
 
 // Encapsulates an IPC channel between the GPU process and one renderer
 // process. On the renderer side there's a corresponding GpuChannelHost.
 class GpuChannel : public IPC::Listener,
                    public IPC::Sender,
@@ skipping 87 matching lines @@
   bool handle_messages_scheduled() const { return handle_messages_scheduled_; }
   uint64 messages_processed() const { return messages_processed_; }
 
   // If |preemption_flag->IsSet()|, any stub on this channel
   // should stop issuing GL commands. Setting this to NULL stops deferral.
   void SetPreemptByFlag(
       scoped_refptr<gpu::PreemptionFlag> preemption_flag);
 
   void CacheShader(const std::string& key, const std::string& shader);
 
-  void AddFilter(IPC::ChannelProxy::MessageFilter* filter);
-  void RemoveFilter(IPC::ChannelProxy::MessageFilter* filter);
+  void AddFilter(IPC::MessageFilter* filter);
+  void RemoveFilter(IPC::MessageFilter* filter);
 
   uint64 GetMemoryUsage();
 
  protected:
   virtual ~GpuChannel();
 
  private:
   friend class base::RefCountedThreadSafe<GpuChannel>;
   friend class GpuChannelMessageFilter;
 
@@ skipping 68 matching lines @@
   scoped_ptr<DevToolsGpuAgent> devtools_gpu_agent_;
 
   size_t num_stubs_descheduled_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChannel);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_GPU_CHANNEL_H_