kiosk: Ensures "Apps" menu visible on launch error.

chrome/browser/resources/chromeos/login/apps_menu.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.
 
 /**
  * @fileoverview Kiosk apps menu implementation.
  */
 
 cr.define('login', function() {
   'use strict';
@@ skipping 43 matching lines @@
     },
 
     /** @override */
     showMenu: function(shouldSetFocus) {
       if (this.needsRebuild_) {
         this.menu.textContent = '';
         this.data_.forEach(this.addItem_, this);
         this.needsRebuild_ = false;
       }
 
-      MenuButton.prototype.showMenu.apply(this, arguments);
+      if (this.data.length > 0)
+        MenuButton.prototype.showMenu.apply(this, arguments);
     },
 
     /**
      * Invoked when apps menu becomes visible.
      */
     didShow: function() {
       window.setTimeout(function() {
         if (!$('apps-header-bar-item').hidden)
           chrome.send('checkKioskAppLaunchError');
       }, 500);
@@ skipping 65 matching lines @@
       }.bind(this));
     }
   };
 
   /**
    * Sets apps to be displayed in the apps menu.
    * @param {!Array.<!Object>} apps An array of app info objects.
    */
   AppsMenuButton.setApps = function(apps) {
     $('show-apps-button').data = apps;
-    $('login-header-bar').hasApps = apps.length > 0;
+    $('login-header-bar').hasApps =
+        apps.length > 0 || loadTimeData.getBoolean('kioskAppHasLaunchError');
     chrome.send('kioskAppsLoaded');
   };
 
   /**
    * Shows the given error message.
    * @param {!string} message Error message to show.
    */
   AppsMenuButton.showError = function(message) {
     /** @const */ var BUBBLE_OFFSET = 25;
     /** @const */ var BUBBLE_PADDING = 12;
@@ skipping 12 matching lines @@
    *     mode.  Default is false.
    */
   AppsMenuButton.runAppForTesting = function(id, opt_diagnostic_mode) {
     $('show-apps-button').findAndRunAppForTesting(id, opt_diagnostic_mode);
   };
 
   return {
     AppsMenuButton: AppsMenuButton
   };
 });