Add missing argument to Element.setAttribute() calls

native_client_sdk/src/examples/demo/nacl_io/example.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.
 
 function moduleDidLoad() {
   common.hideModule();
 }
 
 // Called by the common.js module.
 function domContentLoaded(name, tc, config, width, height) {
@@ skipping 28 matching lines @@
 }
 
 function onRadioClicked(e) {
   var divId = this.id.slice(5);  // skip "radio"
   var functionEls = document.querySelectorAll('.function');
   for (var i = 0; i < functionEls.length; ++i) {
     var visible = functionEls[i].id === divId;
     if (functionEls[i].id === divId)
       functionEls[i].removeAttribute('hidden');
     else
-      functionEls[i].setAttribute('hidden');
+      functionEls[i].setAttribute('hidden', '');
   }
 }
 
 function addNameToSelectElements(cssClass, handle, name) {
   var text = '[' + handle + '] ' + name;
   var selectEls = document.querySelectorAll(cssClass);
   for (var i = 0; i < selectEls.length; ++i) {
     var optionEl = document.createElement('option');
     optionEl.setAttribute('value', handle);
     optionEl.appendChild(document.createTextNode(text));
@@ skipping 251 matching lines @@
 
     if (!resultFunc) {
       common.logMessage('Error: Bad message ' + funcName +
                         ' received from NaCl module.');
       return;
     }
 
     resultFunc.apply(null, params.slice(1));
   }
 }