[Background Sync] Use Mojo IPC to fire background sync events

content/browser/service_worker/embedded_worker_test_helper.h

Index: content/browser/service_worker/embedded_worker_test_helper.h
diff --git a/content/browser/service_worker/embedded_worker_test_helper.h b/content/browser/service_worker/embedded_worker_test_helper.h
index af112f5e164f87c67b8a7947abaf7f06873e813c..fb00bc388cdcd4cbf2615f3cb7d4828880105491 100644
--- a/content/browser/service_worker/embedded_worker_test_helper.h
+++ b/content/browser/service_worker/embedded_worker_test_helper.h
@@ -102,7 +102,6 @@ class EmbeddedWorkerTestHelper : public IPC::Sender,
   virtual void OnPushEvent(int embedded_worker_id,
                            int request_id,
                            const std::string& data);
-  virtual void OnSyncEvent(int embedded_worker_id, int request_id);
 
   // These functions simulate sending an EmbeddedHostMsg message to the
   // browser.
@@ -127,7 +126,6 @@ class EmbeddedWorkerTestHelper : public IPC::Sender,
   void OnFetchEventStub(int request_id,
                         const ServiceWorkerFetchRequest& request);
   void OnPushEventStub(int request_id, const std::string& data);
-  void OnSyncEventStub(int request_id);
 
   MessagePortMessageFilter* NewMessagePortMessageFilter();