ServiceWorker: Change the return value of ServiceWorkerRegistration::unregister to boolean (4/4)

content/child/service_worker/service_worker_dispatcher.cc

Index: content/child/service_worker/service_worker_dispatcher.cc
diff --git a/content/child/service_worker/service_worker_dispatcher.cc b/content/child/service_worker/service_worker_dispatcher.cc
index bfe4075621b3e16e887ca81b777e92c1d962ed60..21a45bdf1f41ec466bf9c50e96ce7c57fee86249 100644
--- a/content/child/service_worker/service_worker_dispatcher.cc
+++ b/content/child/service_worker/service_worker_dispatcher.cc
@@ -257,12 +257,8 @@ void ServiceWorkerDispatcher::OnUnregistered(
   DCHECK(callbacks);
   if (!callbacks)
     return;
-#ifdef DISABLE_SERVICEWORKER_UNREGISTER_RESOLVE_TO_BOOLEAN
-  callbacks->onSuccess(NULL);
-#else
   bool is_success = true;
   callbacks->onSuccess(&is_success);
-#endif
   pending_unregistration_callbacks_.Remove(request_id);
 }