Add ChromeVox support for managed accessibility features

Add ChromeVox support to indicate for each accessibility feature,
whether its forced on, and is being controlled by a policy,
in the tray accessibility menu.

Bug: 552439
Change-Id: Ia6066725deeaa4587192c6b309de7dfdfc4b10fe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1863020Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Amr Aboelkher <amraboelkher@google.com>
Cr-Commit-Position: refs/heads/master@{#706507}

ash/ash_strings.grd

@@ -442,6 +442,10 @@ This file contains the strings for ash.
                desc="The label used in the notification used to indicate that, the accessibility feature is being set as forced disabled.">
         deactivated
       </message>
+      <message name="IDS_ASH_ACCESSIBILITY_FEATURE_MANAGED"
+               desc="The label used to indicate that, the accessiblity feature is being managed by a policy.">
+        <ph name="FEATURE_NAME">$1<ex>Full-screen magnifier</ex></ph> This setting is enforced by your administrator.
+      </message>
 
       <message name="IDS_ASH_STATUS_TRAY_IME_SHORT" desc="The short label used for IME button in system tray bubble.">
         Keyboard

ash/system/tray/tray_detailed_view.cc

@@ -337,6 +337,10 @@ HoverHighlightView* TrayDetailedView::AddScrollListCheckableItem(
     bool checked,
     bool enterprise_managed) {
   HoverHighlightView* item = AddScrollListItem(icon, text);
+  if (enterprise_managed) {
+    item->SetAccessibleName(l10n_util::GetStringFUTF16(
+        IDS_ASH_ACCESSIBILITY_FEATURE_MANAGED, text));
+  }
   TrayPopupUtils::InitializeAsCheckableRow(item, checked, enterprise_managed);
   return item;
 }