MD OOBE: Focus network list when shown

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 159 matching lines @@
     this.getActiveScreen_().focus();
   },
 
   /** @private */
   onNetworkSelectionScreenShown_: function() {
     // After #networkSelect is stamped, trigger a refresh so that the list
     // will be updated with the currently visible networks and sized
     // appropriately.
     this.async(function() {
       this.$.networkSelect.refreshNetworks();
+      this.$.networkSelect.focus();
     }.bind(this));
   },
 
   /**
    * Handles "visible" event.
    * @private
    */
   onAnimationFinish_: function() {
     this.focus();
   },
@@ skipping 280 matching lines @@
   /**
     * 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);
   },
 });