add error IPC handling to dispatcher

content/child/service_worker/service_worker_dispatcher.h

Index: content/child/service_worker/service_worker_dispatcher.h
diff --git a/content/child/service_worker/service_worker_dispatcher.h b/content/child/service_worker/service_worker_dispatcher.h
index 993033d6a08dc5f419d043433486f32c7915e244..f662c773fb80e1676a5d24705ce1cacf2ac7a0ac 100644
--- a/content/child/service_worker/service_worker_dispatcher.h
+++ b/content/child/service_worker/service_worker_dispatcher.h
@@ -53,12 +53,11 @@ class ServiceWorkerDispatcher : public webkit_glue::WorkerTaskRunner::Observer {
   // webkit_glue::WorkerTaskRunner::Observer implementation.
   virtual void OnWorkerRunLoopStopped() OVERRIDE;
 
-  void OnServiceWorkerRegistered(int32 thread_id,
-                                 int32 request_id,
-                                 int32 service_worker_id);
-  void OnServiceWorkerUnregistered(int32 thread_id,
-                                   int32 request_id,
-                                   int32 service_worker_id);
+  void OnRegistered(int32 thread_id, int32 request_id, int32 service_worker_id);
+  void OnUnregistered(int32 thread_id,
+                      int32 request_id,
+                      int32 service_worker_id);
+  void OnRegistrationError(int32 thread_id, int32 request_id);
 
   IDMap<WebKit::WebServiceWorkerProvider::WebServiceWorkerCallbacks,
         IDMapOwnPointer> pending_callbacks_;