The blink half of the new ServiceWorker 'sync' event.

Source/web/ServiceWorkerGlobalScopeProxy.cpp

Index: Source/web/ServiceWorkerGlobalScopeProxy.cpp
diff --git a/Source/web/ServiceWorkerGlobalScopeProxy.cpp b/Source/web/ServiceWorkerGlobalScopeProxy.cpp
index 80307f05cd84d2b0a73d0826f7182c8fe0e5f898..eb0d33fde95b742dad8baa7f2f3265f939d648de 100644
--- a/Source/web/ServiceWorkerGlobalScopeProxy.cpp
+++ b/Source/web/ServiceWorkerGlobalScopeProxy.cpp
@@ -74,6 +74,14 @@ void ServiceWorkerGlobalScopeProxy::dispatchFetchEvent(int eventID)
     observer->didDispatchEvent();
 }
 
+void ServiceWorkerGlobalScopeProxy::dispatchSyncEvent(int eventID)
+{
+    ASSERT(m_workerGlobalScope);
+    m_workerGlobalScope->dispatchEvent(Event::create(EventTypeNames::sync));
+    ServiceWorkerGlobalScopeClient::from(m_workerGlobalScope)->didHandleSyncEvent(eventID);
+}
+
+
 void ServiceWorkerGlobalScopeProxy::reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL)
 {
     m_client.reportException(errorMessage, lineNumber, columnNumber, sourceURL);