| Index: ash/metrics/user_metrics_recorder.cc | 
| diff --git a/ash/metrics/user_metrics_recorder.cc b/ash/metrics/user_metrics_recorder.cc | 
| index a6ff35eafe6f271c10eeb30f26cd1d2f4cf67d29..a28b656b04e519a80ca18e49b0ffbeefb579d6c1 100644 | 
| --- a/ash/metrics/user_metrics_recorder.cc | 
| +++ b/ash/metrics/user_metrics_recorder.cc | 
| @@ -547,6 +547,9 @@ void UserMetricsRecorder::RecordUserMetricsAction(UserMetricsAction action) { | 
| case UMA_TRAY_LOCK_SCREEN: | 
| RecordAction(UserMetricsAction("Tray_LockScreen")); | 
| break; | 
| +    case UMA_TRAY_NIGHT_LIGHT: | 
| +      RecordAction(UserMetricsAction("Tray_NightLight")); | 
| +      break; | 
| case UMA_TRAY_OVERVIEW: | 
| RecordAction(UserMetricsAction("Tray_Overview")); | 
| break; | 
|  |