Service Worker: Improve error messages from register().

content/browser/service_worker/service_worker_dispatcher_host.h

 // 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.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_HOST_H_
 
 #include <vector>
 
 #include "base/id_map.h"
@@ skipping 125 matching lines @@
       int provider_id,
       ServiceWorkerRegistration* registration,
       ServiceWorkerRegistrationObjectInfo* info,
       ServiceWorkerVersionAttributes* attrs);
 
   // Callbacks from ServiceWorkerContextCore
   void RegistrationComplete(int thread_id,
                             int provider_id,
                             int request_id,
                             ServiceWorkerStatusCode status,
+                            const std::string& status_message,
                             int64 registration_id);
 
   void UnregistrationComplete(int thread_id,
                               int request_id,
                               ServiceWorkerStatusCode status);
 
   void GetRegistrationComplete(
       int thread_id,
       int provider_id,
       int request_id,
       ServiceWorkerStatusCode status,
       const scoped_refptr<ServiceWorkerRegistration>& registration);
 
   void SendRegistrationError(int thread_id,
                              int request_id,
-                             ServiceWorkerStatusCode status);
+                             ServiceWorkerStatusCode status,
+                             const std::string& status_message);
 
   void SendUnregistrationError(int thread_id,
                                int request_id,
                                ServiceWorkerStatusCode status);
 
   void SendGetRegistrationError(int thread_id,
                                 int request_id,
                                 ServiceWorkerStatusCode status);
 
   ServiceWorkerContextCore* GetContext();
 
   int render_process_id_;
   MessagePortMessageFilter* const message_port_message_filter_;
   ResourceContext* resource_context_;
   scoped_refptr<ServiceWorkerContextWrapper> context_wrapper_;
 
   IDMap<ServiceWorkerHandle, IDMapOwnPointer> handles_;
   IDMap<ServiceWorkerRegistrationHandle, IDMapOwnPointer> registration_handles_;
 
   bool channel_ready_;  // True after BrowserMessageFilter::sender_ != NULL.
   ScopedVector<IPC::Message> pending_messages_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_HOST_H_