Move IPC::MessageFilter and router to a separate file

content/public/common/child_process_host.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_PULIC_COMMON_CHILD_PROCESS_HOST_H_
 #define CONTENT_PULIC_COMMON_CHILD_PROCESS_HOST_H_
 
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_channel_proxy.h"
 
 namespace base {
 class FilePath;
 }
 
+namespace IPC {
+class MessageFilter;
+}
+
 namespace content {
 
 class ChildProcessHostDelegate;
 
 // This represents a non-browser process. This can include traditional child
 // processes like plugins, or an embedder could even use this for long lived
 // processes that run independent of the browser process.
 class CONTENT_EXPORT ChildProcessHost : public IPC::Sender {
  public:
   virtual ~ChildProcessHost() {}
@@ skipping 57 matching lines @@
   virtual void ForceShutdown() = 0;
 
   // Creates the IPC channel.  Returns the channel id if it succeeded, an
   // empty string otherwise
   virtual std::string CreateChannel() = 0;
 
   // Returns true iff the IPC channel is currently being opened;
   virtual bool IsChannelOpening() = 0;
 
   // Adds an IPC message filter.  A reference will be kept to the filter.
-  virtual void AddFilter(IPC::ChannelProxy::MessageFilter* filter) = 0;
+  virtual void AddFilter(IPC::MessageFilter* filter) = 0;
 
 #if defined(OS_POSIX)
   // See IPC::Channel::TakeClientFileDescriptor.
   virtual int TakeClientFileDescriptor() = 0;
 #endif
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PULIC_COMMON_CHILD_PROCESS_HOST_H_