ServiceWorker: Introduce SWMessageSender in order to mock IPC messaging

content/child/service_worker/service_worker_handle_reference.h

 // Copyright 2014 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_CHILD_SERVICE_WORKER_SERVICE_WORKER_HANDLE_REFERENCE_H_
 #define CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_HANDLE_REFERENCE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/service_worker/service_worker_types.h"
 
 namespace content {
 
-class ThreadSafeSender;
+class ServiceWorkerMessageSender;
 
 // Automatically increments and decrements ServiceWorkerHandle's ref-count
 // (in the browser side) in ctor and dtor.
 class ServiceWorkerHandleReference {
  public:
   // Creates a new ServiceWorkerHandleReference and increments ref-count.
   static scoped_ptr<ServiceWorkerHandleReference> Create(
       const ServiceWorkerObjectInfo& info,
-      ThreadSafeSender* sender);
+      ServiceWorkerMessageSender* sender);
 
   // Creates a new ServiceWorkerHandleReference by adopting a
   // ref-count. ServiceWorkerHandleReferences created this way must
   // have a matching
   // ServiceWorkerDispatcherHost::RegisterServiceWorkerHandle call on
   // the browser side.
   static scoped_ptr<ServiceWorkerHandleReference> Adopt(
       const ServiceWorkerObjectInfo& info,
-      ThreadSafeSender* sender);
+      ServiceWorkerMessageSender* sender);
 
   ~ServiceWorkerHandleReference();
 
   const ServiceWorkerObjectInfo& info() const { return info_; }
   int handle_id() const { return info_.handle_id; }
   const GURL& url() const { return info_.url; }
   blink::WebServiceWorkerState state() const { return info_.state; }
   void set_state(blink::WebServiceWorkerState state) { info_.state = state; }
   int64 version_id() const { return info_.version_id; }
 
  private:
-  ServiceWorkerHandleReference(const ServiceWorkerObjectInfo& info,
-                               ThreadSafeSender* sender,
-                               bool increment_ref_in_ctor);
+  ServiceWorkerHandleReference(
+      const ServiceWorkerObjectInfo& info,
+      ServiceWorkerMessageSender* sender,
+      bool increment_ref_in_ctor);
+
   ServiceWorkerObjectInfo info_;
-  scoped_refptr<ThreadSafeSender> sender_;
+  scoped_refptr<ServiceWorkerMessageSender> sender_;
+
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerHandleReference);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_HANDLE_REFERENCE_H_