chromeos: Simplify power supply info in PowerLibrary

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"
@@ skipping 12 matching lines @@
       public chromeos::NetworkLibrary::NetworkObserver,
       public chromeos::NetworkLibrary::NetworkManagerObserver {
  public:
   NetworkChangeNotifierChromeos();
   virtual ~NetworkChangeNotifierChromeos();
 
  private:
   friend class OnlineStatusReportThreadTask;
 
   // PowerLibrary::Observer overrides.
-  virtual void PowerChanged(PowerLibrary* obj) OVERRIDE;
+  virtual void PowerChanged(const PowerSupplyStatus& status) OVERRIDE;
   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 net
 
 #endif  // CHROME_BROWSER_CHROMEOS_NET_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_