cros: Load pin assets on sign-in screen.

chrome/browser/resources/chromeos/login/md_login.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.
 
 /**
  * @fileoverview Login UI based on a stripped down OOBE controller.
  */
 
 var isMd = true;
 
 // <include src="md_login_shared.js">
 // <include src="login_non_lock_shared.js">
 // <include src="notification_card.js">
 
+/**
+ * Ensures that the pin keyboard is loaded.
+ * @param {object} onLoaded Callback executed when the pin keyboard is loaded.
+ */
+function ensurePinKeyboardLoaded(onLoaded) {
+  'use strict';
+
+  // Wait a frame before running |onLoaded| to avoid any visual glitches.
+  setTimeout(onLoaded);
+}
+
 cr.define('cr.ui.Oobe', function() {
   return {
     /**
      * Initializes the OOBE flow.  This will cause all C++ handlers to
      * be invoked to do final setup.
      */
     initialize: function() {
       cr.ui.login.DisplayManager.initialize();
       login.WrongHWIDScreen.register();
       login.AccountPickerScreen.register();
@@ skipping 39 matching lines @@
      * Reloads content of the page.
      * @param {!Object} data New dictionary with i18n values.
      */
     reloadContent: function(data) {
       loadTimeData.overrideValues(data);
       i18nTemplate.process(document, loadTimeData);
       Oobe.getInstance().updateLocalizedContent_();
     },
   };
 });