Re-factor network_event_log

chromeos/network/network_handler_callbacks.h

 // Copyright (c) 2012 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 CHROMEOS_NETWORK_NETWORK_HANDLER_CALLBACKS_H_
 #define CHROMEOS_NETWORK_NETWORK_HANDLER_CALLBACKS_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 21 matching lines @@
   void(const std::string& service_path)> StringResultCallback;
 
 // Create a DictionaryValue for passing to ErrorCallback
 CHROMEOS_EXPORT base::DictionaryValue* CreateErrorData(
     const std::string& service_path,
     const std::string& error_name,
     const std::string& error_message);
 
 // Callback for Shill errors. |path| may be blank if not relevant.
 // Logs an error and calls |error_callback| if not null.
-void ShillErrorCallbackFunction(const std::string& module,
-                                const std::string& path,
+void ShillErrorCallbackFunction(const std::string& path,
                                 const ErrorCallback& error_callback,
                                 const std::string& error_name,
                                 const std::string& error_message);
 
 }  // namespace network_handler
 }  // namespace chromeos
 
 #endif  // CHROMEOS_NETWORK_NETWORK_HANDLER_CALLBACKS_H_