Lay groudwork to Closure compile JavaScript

ui/webui/resources/js/chromeos/ui_account_tweaks.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 This file contains methods that allow to tweak
  * internal page UI based on the status of current user (owner/user/guest).
  * It is assumed that required data is passed via i18n strings
  * (using loadTimeData dictionary) that are filled with call to
  * AddAccountUITweaksLocalizedValues in ui_account_tweaks.cc.
@@ skipping 69 matching lines @@
     UIAccountTweaks.disableElementForGuest_(element);
 
     // Walk the tree, searching each ELEMENT node.
     var walker = document.createTreeWalker(element,
                                            NodeFilter.SHOW_ELEMENT,
                                            null,
                                            false);
 
     var node = walker.nextNode();
     while (node) {
-      UIAccountTweaks.disableElementForGuest_(node);
+      UIAccountTweaks.disableElementForGuest_(/** @type {Element} */(node));
       node = walker.nextNode();
     }
   };
 
   /**
    * Disables single element for Guest mode.
    * Adds guest-disabled css class, adds disabled attribute for appropriate
    * elements (input/select/button), and removes href attribute from
    * <a> element.
    *
+   * @param {Element} element Element that should be disabled.
    * @private
-   * @param {Element} element Element that should be disabled.
    */
   UIAccountTweaks.disableElementForGuest_ = function(element) {
     element.classList.add('guest-disabled');
     if (element.nodeName == 'INPUT' ||
         element.nodeName == 'SELECT' ||
-        element.nodeName == 'BUTTON')
+        element.nodeName == 'BUTTON') {
       element.disabled = true;
-    if (element.nodeName == 'A') {
+    } else if (element.nodeName == 'A') {
       element.onclick = function() {
         return false;
       };
     }
   };
 
   // Export
   return {
     UIAccountTweaks: UIAccountTweaks
   };
 
 });