Run jshint over all JavaScript files

ports/libgit2-demo/libgit2.js

 /*
  * Copyright 2014 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 'use strict';
 function runGitCmd(message, arg1, arg2) {
   var dir = document.getElementById('directory').value;
   if (arg2 && arg1)
-    embed.postMessage([message, dir, arg1, arg2]);
+    window.embed.postMessage([message, dir, arg1, arg2]);
   else if (arg1)
-    embed.postMessage([message, dir, arg1]);
+    window.embed.postMessage([message, dir, arg1]);
   else
-    embed.postMessage([message, dir]);
+    window.embed.postMessage([message, dir]);
 }
 
 function clone() {
   var url = document.getElementById('clone_url').value;
   runGitCmd('clone', url);
 }
 
 function chdir() {
   runGitCmd('chdir');
 }
@@ skipping 23 matching lines @@
 }
 
 function handleMessage(message) {
   var output = document.getElementById('output');
   output.value += message.data;
   output.scrollTop = output.scrollHeight;
 }
 
 function onLoad() {
   window.embed = document.getElementById('nacl_module');
-  embed.addEventListener('message', handleMessage, true);
+  window.embed.addEventListener('message', handleMessage, true);
   document.getElementById('init').addEventListener('click', init);
   document.getElementById('clone').addEventListener('click', clone);
   document.getElementById('status').addEventListener('click', status);
   document.getElementById('mount').addEventListener('click', mount);
   document.getElementById('push').addEventListener('click', push);
   document.getElementById('commit').addEventListener('click', commit);
 }
 
 window.onload = onLoad;