[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 13bb4a08c6d91c2ce66dcc510a1967f20f38864d..193b4c65bde2071414837d50d04fe98d81f6ba43 100644
--- a/content/browser/service_worker/embedded_worker_test_helper.h
+++ b/content/browser/service_worker/embedded_worker_test_helper.h
@@ -104,7 +104,6 @@ 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.
@@ -131,7 +130,6 @@ 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();