SWRegistration::unregister returns false when the registration is already unregistered. (2/3)

content/common/service_worker/service_worker_status_code.h

Index: content/common/service_worker/service_worker_status_code.h
diff --git a/content/common/service_worker/service_worker_status_code.h b/content/common/service_worker/service_worker_status_code.h
index a0245e48e10feabbe48edc800c6badbea8adfbc4..2acaf70825a641863c3a466edb34414cc48c47ce 100644
--- a/content/common/service_worker/service_worker_status_code.h
+++ b/content/common/service_worker/service_worker_status_code.h
@@ -42,6 +42,9 @@ enum ServiceWorkerStatusCode {
   // Sending an IPC to the worker failed (often due to child process is
   // terminated).
   SERVICE_WORKER_ERROR_IPC_FAILED,
+
+  // This must be the latest element used in IPC
+  SERVICE_WORKER_STATUS_LAST = SERVICE_WORKER_ERROR_IPC_FAILED
 };
 
 CONTENT_EXPORT const char* ServiceWorkerStatusToString(