BackgroundSync sync events need to be ExtendableEvents, content side cleanup

content/renderer/service_worker/service_worker_context_client.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_RENDERER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_CLIENT_H_
 #define CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 98 matching lines @@
                                      blink::WebServiceWorkerEventResult result);
   virtual void didHandleFetchEvent(int request_id);
   virtual void didHandleFetchEvent(
       int request_id,
       const blink::WebServiceWorkerResponse& response);
   virtual void didHandleNotificationClickEvent(
       int request_id,
       blink::WebServiceWorkerEventResult result);
   virtual void didHandlePushEvent(int request_id,
                                   blink::WebServiceWorkerEventResult result);
-  // TODO(chasej): crbug.com/486890 - Remove when matching blink changes land
-  virtual void didHandleSyncEvent(int request_id);
   virtual void didHandleSyncEvent(int request_id,
                                   blink::WebServiceWorkerEventResult result);
   virtual void didHandleCrossOriginConnectEvent(int request_id,
                                                 bool accept_connection);
 
   // Called on the main thread.
   virtual blink::WebServiceWorkerNetworkProvider*
       createServiceWorkerNetworkProvider(blink::WebDataSource* data_source);
   virtual blink::WebServiceWorkerProvider* createServiceWorkerProvider();
 
@@ skipping 97 matching lines @@
   std::map<int, base::TimeTicks> install_start_timings_;
   std::map<int, base::TimeTicks> notification_click_start_timings_;
   std::map<int, base::TimeTicks> push_start_timings_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerContextClient);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_CLIENT_H_