Improve NetworkStateHandler API

ash/system/chromeos/network/network_icon.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/network_icon.h"
 
 #include "ash/shell.h"
 #include "ash/system/chromeos/network/network_icon_animation_observer.h"
 #include "base/observer_list.h"
 #include "chromeos/network/device_state.h"
@@ skipping 464 matching lines @@
       technology_badge_(NULL) {
   // Default image
   image_ = GetDisconnectedImage(color);
 }
 
 void NetworkIconImpl::Update(const NetworkState* network) {
   // Determine whether or not we need to update the icon.
   bool dirty = image_.isNull();
 
   // If the network state has changed, the icon needs updating.
-  if (state_ != network->state()) {
-    state_ = network->state();
+  if (state_ != network->connection_state()) {
+    state_ = network->connection_state();
     dirty = true;
   }
 
   const std::string& type = network->type();
   if (type != flimflam::kTypeEthernet)
     dirty |= UpdateWirelessStrengthIndex(network);
 
   if (type == flimflam::kTypeCellular)
     dirty |= UpdateCellularState(network);
 
@@ skipping 63 matching lines @@
     icon = iter->second;
   }
 
   // Update and return the icon's image.
   icon->Update(network);
   return icon->image();
 }
 
 }  // namespace network_icon
 }  // namespace ash