If anyone is interested, this is the javascript pulled from the webpage.

  var total = "";
  for (var i = 0; i < 100000; i++) {
      total = total + i.toString();
      history.pushState(0, 0, total);
  }

edit: formatting

Apparently this is a known issue: https://code.google.com/p/chromium/issues/detail?id=394296