ServiceWorker: add ServiceWorkerClients.claim() support (2/3).

content/common/service_worker/service_worker_status_code.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_COMMON_SERVICE_WORKER_SERVICE_WORKER_STATUS_CODE_H_
 #define CONTENT_COMMON_SERVICE_WORKER_SERVICE_WORKER_STATUS_CODE_H_
 
 #include "content/common/content_export.h"
 
 namespace content {
@@ skipping 33 matching lines @@
   SERVICE_WORKER_ERROR_IPC_FAILED,
 
   // Operation is failed by network issue.
   SERVICE_WORKER_ERROR_NETWORK,
 
   // Operation is failed by security issue.
   SERVICE_WORKER_ERROR_SECURITY,
 
   // Event handling failed (event.waitUntil Promise rejected).
   SERVICE_WORKER_ERROR_EVENT_WAITUNTIL_REJECTED,
+
+  // An error triggered by invalid worker state.
+  SERVICE_WORKER_ERROR_STATE,
 };
 
 CONTENT_EXPORT const char* ServiceWorkerStatusToString(
     ServiceWorkerStatusCode code);
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_SERVICE_WORKER_SERVICE_WORKER_STATUS_CODE_H_