Update the 'managed user import' overlay to show an avatar selection grid

chrome/browser/resources/options/managed_user_list.js

 // Copyright 2013 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.
 
 cr.define('options.managedUserOptions', function() {
   /** @const */ var List = cr.ui.List;
   /** @const */ var ListItem = cr.ui.ListItem;
   /** @const */ var ListSingleSelectionModel = cr.ui.ListSingleSelectionModel;
 
   /**
    * Create a new managed user list item.
    * @param {Object} entry The managed user this item represents.
    *     It has the following form:
    *       managedUser = {
    *         id: "Managed User ID",
    *         name: "Managed User Name",
    *         iconURL: "chrome://path/to/icon/image",
-   *         onCurrentDevice: true or false
+   *         onCurrentDevice: true or false,
+   *         needAvatar: true or false
    *       }
    * @constructor
    * @extends {cr.ui.ListItem}
    */
   function ManagedUserListItem(entry) {
     var el = cr.doc.createElement('div');
     el.managedUser_ = entry;
     el.__proto__ = ManagedUserListItem.prototype;
     el.decorate();
     return el;
@@ skipping 77 matching lines @@
       this.selectionModel = new ListSingleSelectionModel();
       this.autoExpands = true;
     },
   };
 
   return {
     ManagedUserListItem: ManagedUserListItem,
     ManagedUserList: ManagedUserList,
   };
 });