chromeos: Add power supply info reading capability

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index 0a0c600d3f1d9bf618b2e82f61b53d5d7094fc9c..83b04778ffce5886e1bcd5e43cf2fdd228d00391 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -14,6 +14,7 @@
 #include "chrome/browser/chromeos/brightness_observer.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/dbus/dbus_thread_manager.h"
+#include "chrome/browser/chromeos/dbus/power_manager_client.h"
 #include "chrome/browser/chromeos/dbus/session_manager_client.h"
 #include "chrome/browser/chromeos/login/session_manager_observer.h"
 #include "chrome/browser/chromeos/net/cros_network_change_notifier_factory.h"
@@ -120,10 +121,6 @@ void ChromeBrowserMainPartsChromeos::PreMainMessageLoopStart() {
     bool use_stub = parameters().command_line_.HasSwitch(switches::kStubCros);
     chromeos::CrosLibrary::Initialize(use_stub);
   }
-  // Replace the default NetworkChangeNotifierFactory with ChromeOS specific
-  // implementation.
-  net::NetworkChangeNotifier::SetFactory(
-      new chromeos::CrosNetworkChangeNotifierFactory());
 }
 
 void ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun() {
@@ -143,11 +140,17 @@ void ChromeBrowserMainPartsChromeos::PostMainMessageLoopStart() {
   // the main message loop is started, as it uses the message loop.
   chromeos::DBusThreadManager::Initialize();
 
+  // Replace the default NetworkChangeNotifierFactory with ChromeOS specific
+  // implementation.  This should be done after DBusThreadManager init.
+  net::NetworkChangeNotifier::SetFactory(
+      new chromeos::CrosNetworkChangeNotifierFactory());
+
   // Initialize the brightness observer so that we'll display an onscreen
-  // indication of brightness changes during login.
+  // indication of brightness changes.
   brightness_observer_.reset(new chromeos::BrightnessObserver());
   chromeos::DBusThreadManager::Get()->power_manager_client()->AddObserver(
       brightness_observer_.get());
+
   // Initialize the session manager observer so that we'll take actions
   // per signals sent from the session manager.
   session_manager_observer_.reset(new chromeos::SessionManagerObserver);