ChromeOS OOBE: More accessibility fixes.

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

 // Copyright 2016 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 Polymer element for displaying material design OOBE.
  */
 
 Polymer({
   is: 'oobe-welcome-md',
@@ skipping 447 matching lines @@
    * @param {!{detail: {!OobeTypes.Timezone}}} event
    * @private
    */
   onTimezoneSelected_: function(event) {
     var item = event.detail;
     if (!item)
       return;
 
     this.screen.onTimezoneSelected_(item.value);
   },
-
-  /**
-    * This function formats message for labels.
-    * @param String label i18n string ID.
-    * @param String parameter i18n string parameter.
-    * @private
-    */
-  formatMessage_: function(label, parameter) {
-    return loadTimeData.getStringF(label, parameter);
-  },
 });