GM_xhr with progress test

gm-xhr-progress.user.js

// ==UserScript==
// @name           GM_xhr with progress test
// @namespace      https://github.com/arantius
// @include        http://localhost*
// ==/UserScript==

dump('>>> GM_xhr test starting.\n');

var xhr = GM_xmlhttpRequest({
  method: "GET",
  url: "http://localhost/slow.php",
  onload: function(response) { dump('<<< onload!\n'); },
  onreadystatechange: function(response) { dump('<<< onreadystatechange!\n'); },
  onprogress: function(response) { dump('<<< onprogress!\n'); },
  onerror: function(response) { dump('<<< onerror!\n'); },
  onabort: function(response) { dump('<<< onabort!\n'); },
});