Move content/renderer/background_sync to Blink

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 90 matching lines @@
   void dispatchInstallEvent(int) override;
   void dispatchNotificationClickEvent(int,
                                       const WebString& notificationID,
                                       const WebNotificationData&,
                                       int actionIndex,
                                       const WebString& reply) override;
   void dispatchNotificationCloseEvent(int,
                                       const WebString& notificationID,
                                       const WebNotificationData&) override;
   void dispatchPushEvent(int, const WebString& data) override;
-  void dispatchSyncEvent(int, const WebString& tag, LastChanceOption) override;
   bool hasFetchEventHandler() override;
   void onNavigationPreloadResponse(
       int fetchEventID,
       std::unique_ptr<WebServiceWorkerResponse>,
       std::unique_ptr<WebDataConsumerHandle>) override;
   void onNavigationPreloadError(
       int fetchEventID,
       std::unique_ptr<WebServiceWorkerError>) override;
 
   // WorkerReportingProxy overrides:
@@ skipping 42 matching lines @@
   HeapHashMap<int, Member<FetchEvent>> m_pendingPreloadFetchEvents;
 
   WebServiceWorkerContextClient* m_client;
 
   CrossThreadPersistent<ServiceWorkerGlobalScope> m_workerGlobalScope;
 };
 
 }  // namespace blink
 
 #endif  // ServiceWorkerGlobalScopeProxy_h