Improve accessibility of user image selection screen.

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

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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() {
 
   var UserImagesGrid = options.UserImagesGrid;
@@ skipping 272 matching lines @@
       if (imageUrl !== null) {
         this.profileImagePresent_ = true;
         this.profileImageUrl_ = imageUrl;
         this.profileImage_ =
             $('user-image-grid').updateItem(this.profileImage_, imageUrl);
       }
     },
 
     /**
      * Appends received images to the list.
-     * @param {Array.<string>} images An array of URLs to user images.
+     * @param {Array.<Object>} imageInfos An array of data about user images.
      * @private
      */
-    setUserImages_: function(images) {
+    setUserImages_: function(imageInfos) {
       var imageGrid = $('user-image-grid');
-      for (var i = 0, url; url = images[i]; i++)
-        imageGrid.addItem(url);
+      for (var i = 0, imageInfo; imageInfo = imageInfos[i]; i++)
+        imageGrid.addItem(imageInfo.url, imageInfo.title);
     },
 
     /**
      * Selects user image with the given URL.
      * @param {string} url URL of the image to select.
      * @private
      */
     setSelectedImage_: function(url) {
       var imageGrid = $('user-image-grid');
       imageGrid.selectedItemUrl = url;
@@ skipping 37 matching lines @@
   ].forEach(function(name) {
     UserImageScreen[name] = function(value) {
       $('user-image')[name + '_'](value);
     };
   });
 
   return {
     UserImageScreen: UserImageScreen
   };
 });