Decouple IPC::MessageFilter from IPC::Channel

content/browser/dom_storage/dom_storage_message_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/browser/dom_storage/dom_storage_message_filter.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/strings/nullable_string16.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 29 matching lines @@
 }
 
 void DOMStorageMessageFilter::UninitializeInSequence() {
   // TODO(michaeln): Restore this DCHECK once crbug/166470 and crbug/164403
   // are resolved.
   // DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::IO));
   context_->RemoveEventObserver(this);
   host_.reset();
 }
 
-void DOMStorageMessageFilter::OnFilterAdded(IPC::Channel* channel) {
+void DOMStorageMessageFilter::OnFilterAdded(IPC::Sender* sender) {
   context_->task_runner()->PostShutdownBlockingTask(
       FROM_HERE,
       DOMStorageTaskRunner::PRIMARY_SEQUENCE,
       base::Bind(&DOMStorageMessageFilter::InitializeInSequence, this));
 }
 
 void DOMStorageMessageFilter::OnFilterRemoved() {
   context_->task_runner()->PostShutdownBlockingTask(
       FROM_HERE,
       DOMStorageTaskRunner::PRIMARY_SEQUENCE,
@@ skipping 156 matching lines @@
     params.connection_id = connection_dispatching_message_for_;
     params.key = key;
     params.new_value = new_value;
     params.old_value = old_value;
     params.namespace_id = alias_namespace_id;
     Send(new DOMStorageMsg_Event(params));
   }
 }
 
 }  // namespace content