Service Worker: Make ServiceWorkerRegistration.update() return a promise. (Chromium 2/3)

content/common/service_worker/service_worker_types.cc

Index: content/common/service_worker/service_worker_types.cc
diff --git a/content/common/service_worker/service_worker_types.cc b/content/common/service_worker/service_worker_types.cc
index 39f84054b70dc5628f644645000f917143cc9265..5204688ca25670dcf5cd289c57f509aa8833d721 100644
--- a/content/common/service_worker/service_worker_types.cc
+++ b/content/common/service_worker/service_worker_types.cc
@@ -8,6 +8,8 @@ namespace content {
 
 const char kServiceWorkerRegisterErrorPrefix[] =
     "Failed to register a ServiceWorker: ";
+const char kServiceWorkerUpdateErrorPrefix[] =
+    "Failed to update a ServiceWorker: ";
 const char kServiceWorkerUnregisterErrorPrefix[] =
     "Failed to unregister a ServiceWorkerRegistration: ";
 const char kServiceWorkerGetRegistrationErrorPrefix[] =