Improve NetworkStateHandler API

chromeos/network/network_state_handler_observer.cc

 // 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.
 
 #include "chromeos/network/network_state_handler_observer.h"
 
 namespace chromeos {
 
 NetworkStateHandlerObserver::NetworkStateHandlerObserver() {
 }
 
 NetworkStateHandlerObserver::~NetworkStateHandlerObserver() {
 }
 
 void NetworkStateHandlerObserver::NetworkManagerChanged() {
 }
 
 void NetworkStateHandlerObserver::NetworkListChanged(
     const NetworkStateList& networks) {
 }
 
 void NetworkStateHandlerObserver::DeviceListChanged() {
 }
 
-void NetworkStateHandlerObserver::ActiveNetworkChanged(
+void NetworkStateHandlerObserver::DefaultNetworkChanged(
     const NetworkState* network) {
 }
 
-void NetworkStateHandlerObserver::ActiveNetworkStateChanged(
+void NetworkStateHandlerObserver::NetworkConnectionStateChanged(
     const NetworkState* network) {
 }
 
-void NetworkStateHandlerObserver::NetworkServiceChanged(
+void NetworkStateHandlerObserver::NetworkPropertiesUpdated(
     const NetworkState* network) {
 }
 
 }  // namespace chromeos