Add a11y on-screen keyboard to accessibility menu on system tray.

ash/metrics/user_metrics_recorder.cc

Index: ash/metrics/user_metrics_recorder.cc
diff --git a/ash/metrics/user_metrics_recorder.cc b/ash/metrics/user_metrics_recorder.cc
index 238fd61a1a40389366911271eae037f799c3018b..4d49e9273a5c32edf2df9e016a1713864796c861 100644
--- a/ash/metrics/user_metrics_recorder.cc
+++ b/ash/metrics/user_metrics_recorder.cc
@@ -224,6 +224,10 @@ void UserMetricsRecorder::RecordUserMetricsAction(UserMetricsAction action) {
       base::RecordAction(
           base::UserMetricsAction("StatusArea_SpokenFeedbackDisabled"));
       break;
+    case ash::UMA_STATUS_AREA_DISABLE_VIRTUAL_KEYBOARD:
+      base::RecordAction(
+          base::UserMetricsAction("StatusArea_VirtualKeyboardDisabled"));
+      break;
     case ash::UMA_STATUS_AREA_DISABLE_WIFI:
       base::RecordAction(
           base::UserMetricsAction("StatusArea_Network_WifiDisabled"));
@@ -256,6 +260,10 @@ void UserMetricsRecorder::RecordUserMetricsAction(UserMetricsAction action) {
       base::RecordAction(
           base::UserMetricsAction("StatusArea_SpokenFeedbackEnabled"));
       break;
+    case ash::UMA_STATUS_AREA_ENABLE_VIRTUAL_KEYBOARD:
+      base::RecordAction(
+          base::UserMetricsAction("StatusArea_VirtualKeyboardEnabled"));
+      break;
     case ash::UMA_STATUS_AREA_ENABLE_WIFI:
       base::RecordAction(
           base::UserMetricsAction("StatusArea_Network_WifiEnabled"));