Improve NetworkStateHandler API

ash/system/chromeos/network/tray_network_state_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 "ash/system/chromeos/network/tray_network_state_observer.h"
 
 #include "ash/system/chromeos/network/network_detailed_view.h"
 #include "ash/system/chromeos/network/tray_network.h"
 #include "ash/system/tray/tray_constants.h"
 #include "chromeos/network/network_state_handler.h"
@@ skipping 28 matching lines @@
     detailed->ManagerChanged();
 }
 
 void TrayNetworkStateObserver::NetworkListChanged(
     const NetworkStateList& networks) {
   tray::NetworkDetailedView* detailed = tray_->detailed();
   if (detailed)
     detailed->NetworkListChanged(networks);
 }
 
-void TrayNetworkStateObserver::NetworkServiceChanged(
+void TrayNetworkStateObserver::NetworkPropertiesUpdated(
     const chromeos::NetworkState* network) {
   tray::NetworkDetailedView* detailed = tray_->detailed();
   if (detailed)
     detailed->NetworkServiceChanged(network);
 }
 
 }  // namespace ash
 }  // namespace internal