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chromium/third_party/blink/web_tests/external/wpt/referrer-policy/generic/inheritance/resources/submit-form-and-remove-frame.html 

<!doctype html>
<meta name='referrer' content='no-referrer'>
<body onload='start()'>
<script>
  function start() {
    myform.submit();
    parent.removeIframe();
  }
</script>
<form id='myform' action='about:blank' target='does-not-exist'>