Report an error message when an update job results in an error.

chrome/common/appcache/appcache_dispatcher.h

 // Copyright (c) 2010 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 CHROME_COMMON_APPCACHE_APPCACHE_DISPATCHER_H_
 #define CHROME_COMMON_APPCACHE_APPCACHE_DISPATCHER_H_
 
 #include <vector>
 #include "chrome/common/appcache/appcache_backend_proxy.h"
 #include "ipc/ipc_message.h"
@@ skipping 15 matching lines @@
  private:
   // Ipc message handlers
   void OnCacheSelected(int host_id, int64 cache_id,
                        appcache::Status status);
   void OnStatusChanged(const std::vector<int>& host_ids,
                        appcache::Status status);
   void OnEventRaised(const std::vector<int>& host_ids,
                      appcache::EventID event_id);
   void OnProgressEventRaised(const std::vector<int>& host_ids,
                              const GURL& url, int num_total, int num_complete);
+  void OnErrorEventRaised(const std::vector<int>& host_ids,
+                          const std::string& message);
   void OnLogMessage(int host_id, int log_level, const std::string& message);
   void OnContentBlocked(int host_id,
                         const GURL& manifest_url);
 
   AppCacheBackendProxy backend_proxy_;
   appcache::AppCacheFrontendImpl frontend_impl_;
 };
 
 #endif  // CHROME_COMMON_APPCACHE_APPCACHE_DISPATCHER_H_