Decouple IPC::MessageFilter from IPC::Channel

content/renderer/pepper/pepper_hung_plugin_filter.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/pepper/pepper_hung_plugin_filter.h"
 
 #include "base/bind.h"
 #include "content/child/child_process.h"
 #include "content/common/frame_messages.h"
 #include "content/renderer/render_thread_impl.h"
@@ skipping 37 matching lines @@
 }
 
 void PepperHungPluginFilter::EndBlockOnSyncMessage() {
   base::AutoLock lock(lock_);
   pending_sync_message_count_--;
   DCHECK(pending_sync_message_count_ >= 0);
 
   MayHaveBecomeUnhung();
 }
 
-void PepperHungPluginFilter::OnFilterAdded(IPC::Channel* channel) {}
+void PepperHungPluginFilter::OnFilterAdded(IPC::Sender* sender) {}
 
 void PepperHungPluginFilter::OnFilterRemoved() {
   base::AutoLock lock(lock_);
   MayHaveBecomeUnhung();
 }
 
 void PepperHungPluginFilter::OnChannelError() {
   base::AutoLock lock(lock_);
   MayHaveBecomeUnhung();
 }
@@ skipping 81 matching lines @@
   hung_plugin_showing_ = true;
   SendHungMessage(true);
 }
 
 void PepperHungPluginFilter::SendHungMessage(bool is_hung) {
   filter_->Send(new FrameHostMsg_PepperPluginHung(
       frame_routing_id_, plugin_child_id_, plugin_path_, is_hung));
 }
 
 }  // namespace content