OnShowLogoutButtonInTrayChanged   20 ash/system/chromeos/session/logout_button_observer.h   virtual void OnShowLogoutButtonInTrayChanged(bool show) = 0;
OnShowLogoutButtonInTrayChanged   41 ash/system/chromeos/session/logout_button_tray.h   virtual void OnShowLogoutButtonInTrayChanged(bool show) OVERRIDE;
OnShowLogoutButtonInTrayChanged  311 ash/system/tray/system_tray_notifier.cc                     OnShowLogoutButtonInTrayChanged(show_login_button));