iframe-for-synchronous-form.html | Explore in Territory

<html>
<head>
<script>
window.onload = function() {
  document.getElementById('theForm').submit();
  try {
    parent.attacked();
  } catch(ex) {
  }
  parent.postMessage('Done.', '*');
};
</script>
</head>
</script>
<body>
<form id="theForm" action="about:blank" method="GET"></form>
</body>
</html>

chromium/third_party/blink/web_tests/http/tests/security/resources/iframe-for-synchronous-form.html