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

webkit/appcache/appcache_frontend_impl.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 WEBKIT_APPCACHE_APPCACHE_FRONTEND_IMPL_H_
 #define WEBKIT_APPCACHE_APPCACHE_FRONTEND_IMPL_H_
 
 #include <vector>
 #include "webkit/appcache/appcache_interfaces.h"
 
 namespace appcache {
 
 class AppCacheFrontendImpl : public AppCacheFrontend {
  public:
   virtual void OnCacheSelected(int host_id, int64 cache_id,
                                Status status);
   virtual void OnStatusChanged(const std::vector<int>& host_ids,
                                Status status);
   virtual void OnEventRaised(const std::vector<int>& host_ids,
                              EventID event_id);
   virtual void OnProgressEventRaised(const std::vector<int>& host_ids,
                                      const GURL& url,
                                      int num_total, int num_complete);
+  virtual void OnErrorEventRaised(const std::vector<int>& host_ids,
+                                  const std::string& message);
   virtual void OnLogMessage(int host_id, LogLevel log_level,
                             const std::string& message);
   virtual void OnContentBlocked(int host_id, const GURL& manifest_url);
 };
 
 }  // namespace
 
 #endif  // WEBKIT_APPCACHE_APPCACHE_FRONTEND_IMPL_H_