Speak the name of the image selection screen when it's activated, if accessibility is turned on

chrome/browser/resources/chromeos/login/oobe_screen_user_image.js

Index: chrome/browser/resources/chromeos/login/oobe_screen_user_image.js
diff --git a/chrome/browser/resources/chromeos/login/oobe_screen_user_image.js b/chrome/browser/resources/chromeos/login/oobe_screen_user_image.js
index 3f1cae2105c5b723334c9405428f3ca88adf71d4..1ac2b96bfca7a1ba33977330d0f806c96c533d4f 100644
--- a/chrome/browser/resources/chromeos/login/oobe_screen_user_image.js
+++ b/chrome/browser/resources/chromeos/login/oobe_screen_user_image.js
@@ -121,6 +121,10 @@ cr.define('oobe', function() {
     onBeforeShow: function(data) {
       Oobe.getInstance().headerHidden = true;
       $('user-image-grid').updateAndFocus();
+
+      // Announce the name of the screen, if accessibility is on.
+      $('user-image-aria-label').setAttribute(
+          'aria-label', localStrings.getString('userImageScreenTitle'));
     },
   };