UMA_TRAY_LOCK_SCREEN  334 ash/metrics/user_metrics_recorder.cc     case ash::UMA_TRAY_LOCK_SCREEN:
UMA_TRAY_LOCK_SCREEN  113 ash/system/date/date_default_view.cc     shell->metrics()->RecordUserMetricsAction(ash::UMA_TRAY_LOCK_SCREEN);