Service Worker: Use more specific errors when StartWorker fails

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 42 matching lines @@
 
   // Event handling failed (event.waitUntil Promise rejected).
   SERVICE_WORKER_ERROR_EVENT_WAITUNTIL_REJECTED,
 
   // An error triggered by invalid worker state.
   SERVICE_WORKER_ERROR_STATE,
 
   // The Service Worker took too long to finish a task.
   SERVICE_WORKER_ERROR_TIMEOUT,
 
+  // An error occurred during initial script evaluation.
+  SERVICE_WORKER_ERROR_SCRIPT_EVALUATE_FAILED,

[nhiroki, 2015/04/15 06:46:02]

Probably you need to update histograms.xml.

[falken, 2015/04/15 06:54:36]

Great point... done

+
   SERVICE_WORKER_ERROR_MAX_VALUE
 };
 
 CONTENT_EXPORT const char* ServiceWorkerStatusToString(
     ServiceWorkerStatusCode code);
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_SERVICE_WORKER_SERVICE_WORKER_STATUS_CODE_H_