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

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Oobe user image screen implementation.
  */
 
 cr.define('oobe', function() {
 
@@ skipping 103 matching lines @@
       }
     },
 
     /**
      * Event handler that is invoked just before the screen is shown.
      * @param {object} data Screen init payload.
      */
     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'));
     },
   };
 
   /**
    * Adds or updates image with user photo and sets it as preview.
    * @param {string} photoUrl Image encoded as data URL.
    */
   UserImageScreen.setUserPhoto = function(photoUrl) {
     var imageGrid = $('user-image-grid');
     if (this.photoImage_)
@@ skipping 20 matching lines @@
   UserImageScreen.setSelectedImage = function(url) {
     var imageGrid = $('user-image-grid');
     imageGrid.selectedItemUrl = url;
     imageGrid.focus();
   };
 
   return {
     UserImageScreen: UserImageScreen
   };
 });