chromeos: Add power supply info reading capability

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 "chrome/browser/chromeos/dbus/dbus_thread_manager.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
 namespace {
 
 // Delay for online change notification reporting.
 const int kOnlineNotificationDelayMS = 500;
 const int kInitialNotificationCheckDelayMS = 1000;
 
@@ skipping 58 matching lines @@
     online_notification_task_->Cancel();
     online_notification_task_ = NULL;
   }
   if (!chromeos::CrosLibrary::Get())
     return;
   chromeos::NetworkLibrary* lib =
       chromeos::CrosLibrary::Get()->GetNetworkLibrary();
   lib->RemoveNetworkManagerObserver(this);
   lib->RemoveObserverForAllNetworks(this);
 
-  chromeos::PowerLibrary* power =
-      chromeos::CrosLibrary::Get()->GetPowerLibrary();
-  power->RemoveObserver(this);
+  chromeos::CrosLibrary::Get()->GetPowerLibrary()->RemoveObserver(this);
+  chromeos::DBusThreadManager::Get()->GetPowerManagerClient()
+      ->RemoveObserver(this);
 }
 
 void NetworkChangeNotifierChromeos::Init() {
   chromeos::NetworkLibrary* network_library =
       chromeos::CrosLibrary::Get()->GetNetworkLibrary();
   network_library->AddNetworkManagerObserver(this);
 
-  chromeos::CrosLibrary::Get()->GetPowerLibrary()
+  chromeos::CrosLibrary::Get()->GetPowerLibrary()->AddObserver(this);
+  chromeos::DBusThreadManager::Get()->GetPowerManagerClient()
       ->AddObserver(this);
 
   UpdateNetworkState(network_library);
 }
 
 void NetworkChangeNotifierChromeos::PowerChanged(
     const PowerSupplyStatus& status) {
 }
 
 void NetworkChangeNotifierChromeos::SystemResumed() {
@@ skipping 145 matching lines @@
 
 // static
 void NetworkChangeNotifierChromeos::UpdateInitialState(
     NetworkChangeNotifierChromeos* self) {
   chromeos::NetworkLibrary* net =
       chromeos::CrosLibrary::Get()->GetNetworkLibrary();
   self->UpdateNetworkState(net);
 }
 
 }  // namespace chromeos