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 eafe16f10e6b2e8fb671c228378061bb51482e66..e52a4a390f0302f0cfeb1897947bc10316fc9a27 100644
--- a/content/renderer/service_worker/service_worker_script_context.h
+++ b/content/renderer/service_worker/service_worker_script_context.h
@@ -38,6 +38,7 @@ class ServiceWorkerScriptContext {
   void DidHandleFetchEvent(int request_id,
                            ServiceWorkerFetchEventResult result,
                            const ServiceWorkerResponse& response);
+  void DidHandleSyncEvent(int request_id);
 
  private:
   // Send message back to the browser.
@@ -45,6 +46,7 @@ class ServiceWorkerScriptContext {
 
   void OnInstallEvent(int active_version_embedded_worker_id);
   void OnFetchEvent(const ServiceWorkerFetchRequest& request);
+  void OnSyncEvent(int active_version_embedded_worker_id);
 
   // Not owned; embedded_context_ owns this.
   EmbeddedWorkerContextClient* embedded_context_;