Eliminate NetworkManagerChanged

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 <set>
 #include <string>
 
 #include "ash/system/chromeos/network/network_icon.h"
@@ skipping 15 matching lines @@
   }
 }
 
 TrayNetworkStateObserver::~TrayNetworkStateObserver() {
   if (NetworkHandler::IsInitialized()) {
     NetworkHandler::Get()->network_state_handler()->RemoveObserver(
         this, FROM_HERE);
   }
 }
 
-void TrayNetworkStateObserver::NetworkManagerChanged() {
-  delegate_->NetworkStateChanged(false);
-}
-
 void TrayNetworkStateObserver::NetworkListChanged() {
   delegate_->NetworkStateChanged(true);
   network_icon::PurgeNetworkIconCache();
 }
 
 void TrayNetworkStateObserver::DeviceListChanged() {
   delegate_->NetworkStateChanged(false);
 }
 
 void TrayNetworkStateObserver::DefaultNetworkChanged(
     const chromeos::NetworkState* network) {
   delegate_->NetworkStateChanged(true);
 }
 
 void TrayNetworkStateObserver::NetworkPropertiesUpdated(
     const chromeos::NetworkState* network) {
   if (network ==
       NetworkHandler::Get()->network_state_handler()->DefaultNetwork())
     delegate_->NetworkStateChanged(true);
   delegate_->NetworkServiceChanged(network);
 }
 
 }  // namespace ash
 }  // namespace internal