Change default code flag to NewAvatarMenu.

chrome/browser/resources/options/browser_options_profile_list.js

 // 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.
 
 cr.define('options.browser_options', function() {
   /** @const */ var DeletableItem = options.DeletableItem;
   /** @const */ var DeletableItemList = options.DeletableItemList;
   /** @const */ var ListSingleSelectionModel = cr.ui.ListSingleSelectionModel;
 
   /**
@@ skipping 33 matching lines @@
       DeletableItem.prototype.decorate.call(this);
 
       var profileInfo = this.profileInfo_;
 
       var containerEl = this.ownerDocument.createElement('div');
       containerEl.className = 'profile-container';
 
       var iconEl = this.ownerDocument.createElement('img');
       iconEl.className = 'profile-img';
       iconEl.style.content = getProfileAvatarIcon(profileInfo.iconURL);
+      iconEl.alt = '';
       containerEl.appendChild(iconEl);
 
       var nameEl = this.ownerDocument.createElement('div');
       nameEl.className = 'profile-name';
       if (profileInfo.isCurrentProfile)
         nameEl.classList.add('profile-item-current');
       containerEl.appendChild(nameEl);
 
       var displayName = profileInfo.name;
       if (profileInfo.isCurrentProfile) {
@@ skipping 67 matching lines @@
      * If false, items in this list will not be deletable.
      * @private
      */
     canDeleteItems_: true,
   };
 
   return {
     ProfileList: ProfileList
   };
 });