chromeos: Add power supply info reading capability

chrome/browser/chromeos/net/network_change_notifier_chromeos.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_NET_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_
 #define CHROME_BROWSER_CHROMEOS_NET_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/task.h"
 #include "chrome/browser/chromeos/cros/network_library.h"
 #include "chrome/browser/chromeos/cros/power_library.h"
+#include "chrome/browser/chromeos/dbus/power_manager_client.h"
 #include "net/base/network_change_notifier.h"
 
 namespace chromeos {
 
 class OnlineStatusReportThreadTask;
 
 class NetworkChangeNotifierChromeos
     : public net::NetworkChangeNotifier,
       public chromeos::PowerLibrary::Observer,
+      public chromeos::PowerManagerClient::Observer,
       public chromeos::NetworkLibrary::NetworkObserver,
       public chromeos::NetworkLibrary::NetworkManagerObserver {
  public:
   NetworkChangeNotifierChromeos();
   virtual ~NetworkChangeNotifierChromeos();
 
   // Initializes the network change notifier. Starts to observe changes
   // from the power manager and the network manager.
   void Init();
 
  private:
   friend class OnlineStatusReportThreadTask;
 
-  // PowerLibrary::Observer overrides.
+  // PowerManagerClient::Observer overrides.
   virtual void PowerChanged(const PowerSupplyStatus& status) OVERRIDE;
+
+  // PowerLibrary::Observer overrides
   virtual void SystemResumed() OVERRIDE;
 
   // NetworkChangeNotifier overrides.
   virtual bool IsCurrentlyOffline() const OVERRIDE;
 
   // NetworkManagerObserver overrides:
   virtual void OnNetworkManagerChanged(chromeos::NetworkLibrary* obj) OVERRIDE;
 
   // NetworkObserver overrides:
   virtual void OnNetworkChanged(chromeos::NetworkLibrary* cros,
@@ skipping 24 matching lines @@
   // Current active network's IP address.
   std::string ip_address_;
 
   OnlineStatusReportThreadTask* online_notification_task_;
   DISALLOW_COPY_AND_ASSIGN(NetworkChangeNotifierChromeos);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_NET_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_