reload_document_write_onload-1.html

<script>
function f() {
  opener.postMessage("original", "*");
  document.write("<!doctype html>2<script>opener.postMessage('written', '*');<\/script>");
  document.close();
}

window.onload = f
</script>

chromium/third_party/blink/web_tests/external/wpt/html/browsers/history/the-location-interface/reload_document_write_onload-1.html