Add a11y support for Resize Toggle Menu

This CL adds the accessibility support for resize toggle menu.

BUG=b:188844118
TEST=Enable Chromevox and launch any AMAC-e app

Change-Id: Ie8be10478e7008f9d8203901dc671fbf6a0bf066
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2936423
Reviewed-by: Yuichiro Hanada <[email protected]>
Commit-Queue: Toshiki Kikuchi <[email protected]>
Cr-Commit-Position: refs/heads/master@{#889182}
diff --git a/components/arc_strings.grdp b/components/arc_strings.grdp
index 50548d37..237606f 100644
--- a/components/arc_strings.grdp
+++ b/components/arc_strings.grdp
@@ -25,6 +25,9 @@
   <message name="IDS_ARC_COMPAT_MODE_RESIZE_TOGGLE_MENU_RESIZE_SETTINGS" desc="Label for the button to allow the user to go to resize settings.">
     Settings
   </message>
+  <message name="IDS_ARC_COMPAT_MODE_RESIZE_TOGGLE_MENU_TITLE" desc="Title for the menu window that shows predefined resize buttons.">
+    Resize toggle menu
+  </message>
   <message name="IDS_ARC_COMPAT_MODE_SPLASH_SCREEN_TITLE" desc="A Dialog title of splash screen to advertise the app is designed for mobile.">
     This app is designed for mobile
   </message>