Add PeripheralBatteryObserver

chrome/browser/chromeos/chrome_browser_main_chromeos.h

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.h
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.h b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
index b92d6869795894b118c041994df78b794370d3a6..95706f2fe5eb7fd305e22073e02c6b44bf49befd 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.h
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
@@ -25,6 +25,7 @@ class BrightnessObserver;
 class DisplayConfigurationObserver;
 class IdleActionWarningObserver;
 class MagnificationManager;
+class PeripheralBatteryObserver;
 class PowerButtonObserver;
 class ResumeObserver;
 class ScreenLockObserver;
@@ -82,6 +83,7 @@ class ChromeBrowserMainPartsChromeos : public ChromeBrowserMainPartsLinux {
   scoped_ptr<ResumeObserver> resume_observer_;
   scoped_ptr<ScreenLockObserver> screen_lock_observer_;
   scoped_ptr<ScreensaverController> screensaver_controller_;
+  scoped_ptr<PeripheralBatteryObserver> peripheral_battery_observer_;
   scoped_ptr<PowerButtonObserver> power_button_observer_;
   scoped_ptr<content::PowerSaveBlocker> retail_mode_power_save_blocker_;
   scoped_ptr<UserActivityNotifier> user_activity_notifier_;