chromeos: Move some network related UI in ui/chromeos/

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"
 #include "base/location.h"
 #include "chromeos/network/network_state.h"
 #include "chromeos/network/network_state_handler.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
+#include "ui/chromeos/network/network_icon.h"
 
 using chromeos::NetworkHandler;
 
 namespace ash {
 
 TrayNetworkStateObserver::TrayNetworkStateObserver(Delegate* delegate)
     : delegate_(delegate) {
   if (NetworkHandler::IsInitialized()) {
     NetworkHandler::Get()->network_state_handler()->AddObserver(
         this, FROM_HERE);
   }
 }
 
 TrayNetworkStateObserver::~TrayNetworkStateObserver() {
   if (NetworkHandler::IsInitialized()) {
     NetworkHandler::Get()->network_state_handler()->RemoveObserver(
         this, FROM_HERE);
   }
 }
 
 void TrayNetworkStateObserver::NetworkListChanged() {
   delegate_->NetworkStateChanged(true);
-  network_icon::PurgeNetworkIconCache();
+  ui::network_icon::PurgeNetworkIconCache();
 }
 
 void TrayNetworkStateObserver::DeviceListChanged() {
   delegate_->NetworkStateChanged(false);
 }
 
 // Any change to the Default (primary connected) network, including Strength
 // changes, should trigger a NetworkStateChanged update.
 void TrayNetworkStateObserver::DefaultNetworkChanged(
     const chromeos::NetworkState* network) {
@@ skipping 16 matching lines @@
   if (network ==
       NetworkHandler::Get()->network_state_handler()->DefaultNetwork()) {
     // Trigger NetworkStateChanged in case the Strength property of the
     // Default network changed.
     delegate_->NetworkStateChanged(true);
   }
   delegate_->NetworkServiceChanged(network);
 }
 
 }  // namespace ash