Fixed proxy settings button behaviour: it becomes disabled when device isn't connected to any netwo…

chrome/browser/chromeos/system/ash_system_tray_delegate.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 "chrome/browser/chromeos/system/ash_system_tray_delegate.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/audio/audio_observer.h"
 #include "ash/system/bluetooth/bluetooth_observer.h"
@@ skipping 648 matching lines @@
   }
 
   virtual void ShowOtherWifi() OVERRIDE {
     network_menu_->ShowOtherWifi();
   }
 
   virtual void ShowOtherCellular() OVERRIDE {
     network_menu_->ShowOtherCellular();
   }
 
+  virtual bool IsNetworkConnected() OVERRIDE {
+    return CrosLibrary::Get()->GetNetworkLibrary()->Connected();
+  }
+
   virtual bool GetWifiAvailable() OVERRIDE {
     return CrosLibrary::Get()->GetNetworkLibrary()->wifi_available();
   }
 
   virtual bool GetMobileAvailable() OVERRIDE {
     return CrosLibrary::Get()->GetNetworkLibrary()->mobile_available();
   }
 
   virtual bool GetBluetoothAvailable() OVERRIDE {
     return bluetooth_adapter_->IsPresent();
@@ skipping 530 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(SystemTrayDelegate);
 };
 
 }  // namespace
 
 ash::SystemTrayDelegate* CreateSystemTrayDelegate(ash::SystemTray* tray) {
   return new chromeos::SystemTrayDelegate(tray);
 }
 
 }  // namespace chromeos