chromeos: Simplify power supply info in PowerLibrary

chrome/browser/chromeos/net/network_change_notifier_chromeos.cc

 // 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.
 
 #include "chrome/browser/chromeos/net/network_change_notifier_chromeos.h"
 
 #include "base/bind.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "content/browser/browser_thread.h"
 
@@ skipping 78 matching lines @@
   chromeos::NetworkLibrary* lib =
       chromeos::CrosLibrary::Get()->GetNetworkLibrary();
   lib->RemoveNetworkManagerObserver(this);
   lib->RemoveObserverForAllNetworks(this);
 
   chromeos::PowerLibrary* power =
       chromeos::CrosLibrary::Get()->GetPowerLibrary();
   power->RemoveObserver(this);
 }
 
-void NetworkChangeNotifierChromeos::PowerChanged(PowerLibrary* obj) {
+void NetworkChangeNotifierChromeos::PowerChanged(
+    const PowerSupplyStatus& status) {
 }
 
 void NetworkChangeNotifierChromeos::SystemResumed() {
   // Force invalidation of various net resources on system resume.
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(
           &NetworkChangeNotifier::NotifyObserversOfIPAddressChange));
 }
 
@@ skipping 138 matching lines @@
 
 // static
 void NetworkChangeNotifierChromeos::UpdateInitialState(
     NetworkChangeNotifierChromeos* self) {
   chromeos::NetworkLibrary* net =
       chromeos::CrosLibrary::Get()->GetNetworkLibrary();
   self->UpdateNetworkState(net);
 }
 
 }  // namespace net