OnUserAddedToSession  303 ash/system/tray/system_tray_notifier.cc                     OnUserAddedToSession());
OnUserAddedToSession   75 ash/system/user/tray_user.h   virtual void OnUserAddedToSession() OVERRIDE;
OnUserAddedToSession   20 ash/system/user/user_observer.h   virtual void OnUserAddedToSession() = 0;