Lay groudwork to Closure compile JavaScript

ui/webui/resources/js/chromeos/ui_account_tweaks.js

Index: ui/webui/resources/js/chromeos/ui_account_tweaks.js
diff --git a/ui/webui/resources/js/chromeos/ui_account_tweaks.js b/ui/webui/resources/js/chromeos/ui_account_tweaks.js
index ccfd3578132d3d4f20e512ca5ce246a4010d16a5..4ce2c703735b94902f4e9e5668f01b93aae73b6e 100644
--- a/ui/webui/resources/js/chromeos/ui_account_tweaks.js
+++ b/ui/webui/resources/js/chromeos/ui_account_tweaks.js
@@ -87,7 +87,7 @@ cr.define('uiAccountTweaks', function() {
 
     var node = walker.nextNode();
     while (node) {
-      UIAccountTweaks.disableElementForGuest_(node);
+      UIAccountTweaks.disableElementForGuest_(/** @type {Element} */(node));
       node = walker.nextNode();
     }
   };
@@ -98,16 +98,16 @@ cr.define('uiAccountTweaks', function() {
    * elements (input/select/button), and removes href attribute from
    * <a> element.
    *
-   * @private
    * @param {Element} element Element that should be disabled.
+   * @private
    */
   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;
       };