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chromium/content/test/data/remove_frame_on_load.html 

<html>
  <head>
    <title>Remove frame on load of about:blank</title>
    <script>
      var f;
      window.addEventListener('load', function() {
        f = document.querySelector('iframe')
        f.onload = function() {
          if (f.contentWindow.location.href == 'about:blank')
            f.parentNode.removeChild(f);
        };
      });
    </script>
  </head>
  <body>
    <p>Navigate the frame to about:blank page to cause it to be removed.</p>
    <iframe src="/cross-site/b.com/title2.html"></iframe>
  </body>
</html>