navigate-to-about-blank-from-subframe-pagehide-handler-cross-origin.html

<!DOCTYPE html>
<iframe></iframe>
<a href='about:blank'></a>
<script>
  if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
  }
  let iframe = document.querySelector('iframe');
  let link = document.querySelector('a');
  iframe.contentWindow.addEventListener('pagehide', function() {
    link.click();
  });
  location.href = 'http://localhost:8000/navigation/resources/pass-and-notify-done.html'
</script>

chromium/third_party/blink/web_tests/http/tests/navigation/navigate-to-about-blank-from-subframe-pagehide-handler-cross-origin.html