Browser side of new ServiceWorker 'sync' event.

content/renderer/service_worker/service_worker_script_context.h

Index: content/renderer/service_worker/service_worker_script_context.h
diff --git a/content/renderer/service_worker/service_worker_script_context.h b/content/renderer/service_worker/service_worker_script_context.h
index 1a90ceb450beca17280ffab04708203935bac1b9..588e2394161ccd3c139868a810cfee8ea8d83ce4 100644
--- a/content/renderer/service_worker/service_worker_script_context.h
+++ b/content/renderer/service_worker/service_worker_script_context.h
@@ -43,6 +43,7 @@ class ServiceWorkerScriptContext {
   void DidHandleFetchEvent(int request_id,
                            ServiceWorkerFetchEventResult result,
                            const ServiceWorkerResponse& response);
+  void DidHandleSyncEvent(int request_id);
 
  private:
   // Send message back to the browser.
@@ -53,6 +54,7 @@ class ServiceWorkerScriptContext {
   void OnPostMessage(const base::string16& message,
                      const std::vector<int>& sent_message_port_ids,
                      const std::vector<int>& new_routing_ids);
+  void OnSyncEvent();
 
   // Not owned; embedded_context_ owns this.
   EmbeddedWorkerContextClient* embedded_context_;