Move content/renderer/background_sync to Blink

third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h

Index: third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
diff --git a/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h b/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
index cdf5b2b5b74ba580b2f5e83b18f9ba7b9bcb1df5..c1431c2c5d2ee57233eb7218629e3bfe4b5da403 100644
--- a/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
+++ b/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
@@ -50,6 +50,7 @@ class WebServiceWorkerNetworkProvider;
 class WebServiceWorkerProvider;
 class WebServiceWorkerResponse;
 class WebString;
+class InterfaceRegistry;
 
 // This interface is implemented by the client. It is supposed to be created
 // on the main thread and then passed on to the worker thread by a newly
@@ -182,13 +183,6 @@ class WebServiceWorkerContextClient {
                                   WebServiceWorkerEventResult result,
                                   double eventDispatchTime) {}
 
-  // ServiceWorker specific method. Called after SyncEvent (dispatched via
-  // WebServiceWorkerContextProxy) is handled by the ServiceWorker's script
-  // context.
-  virtual void didHandleSyncEvent(int syncEventID,
-                                  WebServiceWorkerEventResult result,
-                                  double eventDispatchTime) {}
-
   // Ownership of the returned object is transferred to the caller.
   // This is called on the main thread.
   virtual WebServiceWorkerNetworkProvider* createServiceWorkerNetworkProvider(
@@ -269,6 +263,8 @@ class WebServiceWorkerContextClient {
   virtual void registerForeignFetchScopes(
       const WebVector<WebURL>& subScopes,
       const WebVector<WebSecurityOrigin>& origins) = 0;
+
+  virtual InterfaceRegistry* interfaceRegistry() { return nullptr; }
 };
 
 }  // namespace blink