common/src/web/proxy/page2.html

<!DOCTYPE html>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Page 2</title>
This page is a middle man for referrer tests.
This page will include a link to a "next" page if the <code>next</code> query
parameter, or the <code>document.referrer</code> is set.
<p><input type="button" id="forward" value="Forward" onclick="history.go(1)"/>
<script>
  var match = document.location.search.match(/next=(.*)/);
  var next = document.referrer || '';
  if (match && match.length == 2) {
    next = decodeURIComponent(match[1]);
  }

  if (next) {
    var link = document.createElement('a');
    link.innerText = 'Next!';
    link.textContent = 'Next!';
    link.id = 'next';
    link.href = next;
    document.body.appendChild(link);
  }
</script>