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..4ea1b1e766c67d44aac14749245d899edc35ed0a 100644
--- a/ash/metrics/user_metrics_recorder.cc
+++ b/ash/metrics/user_metrics_recorder.cc
@@ -228,6 +228,10 @@ void UserMetricsRecorder::RecordUserMetricsAction(UserMetricsAction action) {
       base::RecordAction(
           base::UserMetricsAction("StatusArea_Network_WifiDisabled"));
       break;
+    case ash::UMA_STATUS_AREA_DISABLE_VIRTUAL_KEYBOARD:

[Daniel Erat, 2014/02/04 22:05:19]

nit: please keep this list alphabetized (this should come before
ash::UMA_STATUS_AREA_DISABLE_WIFI)

[kevers, 2014/02/04 22:37:57]

Done.

+      base::RecordAction(
+          base::UserMetricsAction("StatusArea_VirtualKeyboardDisabled"));
+      break;
     case ash::UMA_STATUS_AREA_DRIVE_CANCEL_OPERATION:
       base::RecordAction(
           base::UserMetricsAction("StatusArea_Drive_CancelOperation"));
@@ -260,6 +264,10 @@ void UserMetricsRecorder::RecordUserMetricsAction(UserMetricsAction action) {
       base::RecordAction(
           base::UserMetricsAction("StatusArea_Network_WifiEnabled"));
       break;
+    case ash::UMA_STATUS_AREA_ENABLE_VIRTUAL_KEYBOARD:

[Daniel Erat, 2014/02/04 22:05:19]

same here

[kevers, 2014/02/04 22:37:57]

Done.

+      base::RecordAction(
+          base::UserMetricsAction("StatusArea_VirtualKeyboardEnabled"));
+      break;
     case ash::UMA_STATUS_AREA_IME_SHOW_DETAILED:
       base::RecordAction(
           base::UserMetricsAction("StatusArea_IME_Detailed"));