Move IPC::MessageFilter and router to a separate file

content/browser/service_worker/service_worker_provider_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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_HOST_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_HOST_H_
 
 #include <set>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
 #include "webkit/common/resource_type.h"
 
-namespace ipc {
+namespace IPC {
 class Sender;
 }
 
 namespace content {
 
 class ServiceWorkerContextCore;
 class ServiceWorkerDispatcherHost;
 class ServiceWorkerVersion;
 
 // This class is the browser-process representation of a serice worker
@@ skipping 67 matching lines @@
   scoped_refptr<ServiceWorkerVersion> hosted_version_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
   ServiceWorkerDispatcherHost* dispatcher_host_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerProviderHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_HOST_H_