Add metrics for when a cast is started or stopped from the system tray.

ash/metrics/user_metrics_recorder.h

Index: ash/metrics/user_metrics_recorder.h
diff --git a/ash/metrics/user_metrics_recorder.h b/ash/metrics/user_metrics_recorder.h
index 7bb6f9d52d992bd59518523a4cd44733c4f2bb23..7dbee00a6d25d18d740f721e74db55deac2b2b57 100644
--- a/ash/metrics/user_metrics_recorder.h
+++ b/ash/metrics/user_metrics_recorder.h
@@ -59,6 +59,7 @@ enum UserMetricsAction {
   UMA_STATUS_AREA_CAPS_LOCK_DISABLED_BY_CLICK,
   UMA_STATUS_AREA_CAPS_LOCK_ENABLED_BY_CLICK,
   UMA_STATUS_AREA_CAPS_LOCK_POPUP,
+  UMA_STATUS_AREA_CAST_STOP_CAST,
   UMA_STATUS_AREA_CONNECT_TO_CONFIGURED_NETWORK,
   UMA_STATUS_AREA_CONNECT_TO_UNCONFIGURED_NETWORK,
   UMA_STATUS_AREA_CONNECT_TO_VPN,
@@ -69,6 +70,7 @@ enum UserMetricsAction {
   UMA_STATUS_AREA_DETAILED_BLUETOOTH_VIEW,
   UMA_STATUS_AREA_DETAILED_BRIGHTNESS_VIEW,
   UMA_STATUS_AREA_DETAILED_CAST_VIEW,
+  UMA_STATUS_AREA_DETAILED_CAST_VIEW_LAUNCH_CAST,
   UMA_STATUS_AREA_DETAILED_DRIVE_VIEW,
   UMA_STATUS_AREA_DETAILED_NETWORK_VIEW,
   UMA_STATUS_AREA_DETAILED_VPN_VIEW,