Decouple IPC::MessageFilter from IPC::Channel

components/nacl/renderer/pnacl_translation_resource_host.h

 // Copyright 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.
 
 #ifndef CHROME_RENDERER_PEPPER_PNACL_TRANSLATION_RESOURCE_HOST_H_
 #define CHROME_RENDERER_PEPPER_PNACL_TRANSLATION_RESOURCE_HOST_H_
 
 #include <map>
 
 #include "ipc/ipc_platform_file.h"
@@ skipping 38 matching lines @@
     PP_Bool* is_hit;
     PP_FileHandle* file_handle;
     scoped_refptr<ppapi::TrackedCallback> callback;
   };
 
   // Maps the instance with an outstanding cache request to the info
   // about that request.
   typedef std::map<PP_Instance, CacheRequestInfo> CacheRequestInfoMap;
   // IPC::MessageFilter implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-  virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
+  virtual void OnFilterAdded(IPC::Sender* sender) OVERRIDE;
   virtual void OnFilterRemoved() OVERRIDE;
   virtual void OnChannelClosing() OVERRIDE;
 
   void SendRequestNexeFd(int render_view_id,
                          PP_Instance instance,
                          const nacl::PnaclCacheInfo& cache_info,
                          PP_Bool* is_hit,
                          PP_FileHandle* file_handle,
                          scoped_refptr<ppapi::TrackedCallback> callback);
   void SendReportTranslationFinished(PP_Instance instance,
                                      PP_Bool success);
   void OnNexeTempFileReply(PP_Instance instance,
                            bool is_hit,
                            IPC::PlatformFileForTransit file);
   void CleanupCacheRequests();
 
   scoped_refptr<base::MessageLoopProxy> io_message_loop_;
 
   // Should be accessed on the io thread.
-  IPC::Channel* channel_;
+  IPC::Sender* sender_;
   CacheRequestInfoMap pending_cache_requests_;
   DISALLOW_COPY_AND_ASSIGN(PnaclTranslationResourceHost);
 };
 
 #endif  // CHROME_RENDERER_PEPPER_PNACL_TRANSLATION_RESOURCE_HOST_H_