Revert 276939 "Decouple IPC::MessageFilter from IPC::Channel"

content/browser/service_worker/service_worker_dispatcher_host.cc

 // 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.
 
 #include "content/browser/service_worker/service_worker_dispatcher_host.h"
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/message_port_message_filter.h"
 #include "content/browser/message_port_service.h"
@@ skipping 52 matching lines @@
         BrowserThread::IO, FROM_HERE,
         base::Bind(&ServiceWorkerDispatcherHost::Init,
                    this, make_scoped_refptr(context_wrapper)));
     return;
   }
   context_wrapper_ = context_wrapper;
   GetContext()->embedded_worker_registry()->AddChildProcessSender(
       render_process_id_, this);
 }
 
-void ServiceWorkerDispatcherHost::OnFilterAdded(IPC::Sender* sender) {
-  BrowserMessageFilter::OnFilterAdded(sender);
+void ServiceWorkerDispatcherHost::OnFilterAdded(IPC::Channel* channel) {
+  BrowserMessageFilter::OnFilterAdded(channel);
   channel_ready_ = true;
   std::vector<IPC::Message*> messages;
   pending_messages_.release(&messages);
   for (size_t i = 0; i < messages.size(); ++i) {
     BrowserMessageFilter::Send(messages[i]);
   }
 }
 
 void ServiceWorkerDispatcherHost::OnDestruct() const {
   BrowserThread::DeleteOnIOThread::Destruct(this);
@@ skipping 348 matching lines @@
       status, &error_type, &error_message);
   Send(new ServiceWorkerMsg_ServiceWorkerRegistrationError(
       thread_id, request_id, error_type, error_message));
 }
 
 ServiceWorkerContextCore* ServiceWorkerDispatcherHost::GetContext() {
   return context_wrapper_->context();
 }
 
 }  // namespace content