Decouple IPC::MessageFilter from IPC::Channel

content/renderer/pepper/pepper_hung_plugin_filter.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_RENDERER_PEPPER_PEPPER_HUNG_PLUGIN_FILTER_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_HUNG_PLUGIN_FILTER_H_
 
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop_proxy.h"
@@ skipping 25 matching lines @@
   // this to identify the proper plugin process to terminate.
   PepperHungPluginFilter(const base::FilePath& plugin_path,
                          int frame_routing_id,
                          int plugin_child_id);
 
   // SyncMessageStatusReceiver implementation.
   virtual void BeginBlockOnSyncMessage() OVERRIDE;
   virtual void EndBlockOnSyncMessage() OVERRIDE;
 
   // MessageFilter implementation.
-  virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
+  virtual void OnFilterAdded(IPC::Sender* sender) OVERRIDE;
   virtual void OnFilterRemoved() OVERRIDE;
   virtual void OnChannelError() OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
  protected:
   virtual ~PepperHungPluginFilter();
 
  private:
   // Makes sure that the hung timer is scheduled.
   void EnsureTimerScheduled();
@@ skipping 48 matching lines @@
   bool hung_plugin_showing_;
 
   bool timer_task_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperHungPluginFilter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_HUNG_PLUGIN_FILTER_H_