ServiceWorker: Route unregister() through WebServiceWorkerRegistration for refactoring (2)

content/child/service_worker/web_service_worker_provider_impl.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_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_PROVIDER_IMPL_H_
 #define CONTENT_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_PROVIDER_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "third_party/WebKit/public/platform/WebServiceWorkerProvider.h"
@@ skipping 17 matching lines @@
   WebServiceWorkerProviderImpl(ThreadSafeSender* thread_safe_sender,
                                ServiceWorkerProviderContext* context);
   virtual ~WebServiceWorkerProviderImpl();
 
   virtual void setClient(blink::WebServiceWorkerProviderClient* client);
 
   virtual void registerServiceWorker(const blink::WebURL& pattern,
                                      const blink::WebURL& script_url,
                                      WebServiceWorkerRegistrationCallbacks*);
 
+  // TODO(nhiroki): Remove this after http://crbug.com/500404 is fixed.
   virtual void unregisterServiceWorker(
       const blink::WebURL& pattern,
-      WebServiceWorkerUnregistrationCallbacks*);
+      blink::WebCallbacks<bool, blink::WebServiceWorkerError>*);
 
   virtual void getRegistration(const blink::WebURL& document_url,
                                WebServiceWorkerGetRegistrationCallbacks*);
   virtual void getRegistrations(WebServiceWorkerGetRegistrationsCallbacks*);
   virtual void getRegistrationForReady(
       WebServiceWorkerGetRegistrationForReadyCallbacks*);
 
   int provider_id() const;
 
  private:
   void RemoveProviderClient();
   ServiceWorkerDispatcher* GetDispatcher();
 
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
   scoped_refptr<ServiceWorkerProviderContext> context_;
 
   DISALLOW_COPY_AND_ASSIGN(WebServiceWorkerProviderImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_PROVIDER_IMPL_H_