Report error messages to DevTools window.

content/browser/service_worker/service_worker_version.cc

 // Copyright 2013 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.
 
 #include "content/browser/service_worker/service_worker_version.h"
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/stl_util.h"
@@ skipping 751 matching lines @@
 }
 
 void ServiceWorkerVersion::AddListener(Listener* listener) {
   listeners_.AddObserver(listener);
 }
 
 void ServiceWorkerVersion::RemoveListener(Listener* listener) {
   listeners_.RemoveObserver(listener);
 }
 
+void ServiceWorkerVersion::ReportRegistrationFailure(
+    ServiceWorkerStatusCode status,
+    const std::string& status_message) {
+  std::string message(ServiceWorkerStatusToString(status));
+  OnReportException(base::UTF8ToUTF16(message + ". " + status_message), -1, -1,

[falken, 2015/03/26 03:56:29]

The status_message is supposed to be the message to show the user, and we only
fall back to the generic message if it doesn't exist: see
GetServiceWorkerRegistrationStatusResponse and ServiceWorkerError::take.

[horo, 2015/03/26 06:10:28]

Done.

+                    GURL());
+}
+
 void ServiceWorkerVersion::Doom() {
   if (is_doomed_)
     return;
   is_doomed_ = true;
   if (!HasControllee())
     DoomInternal();
 }
 
 void ServiceWorkerVersion::SetDevToolsAttached(bool attached) {
   embedded_worker()->set_devtools_attached(attached);
@@ skipping 885 matching lines @@
     int request_id) {
   callbacks->Remove(request_id);
   if (is_doomed_) {
     // The stop should be already scheduled, but try to stop immediately, in
     // order to release worker resources soon.
     StopWorkerIfIdle();
   }
 }
 
 }  // namespace content