chromium/third_party/blink/web_tests/accessibility/no-crash-modifying-dom-in-notification-callback.html

<html>
<head>
<script>

if (window.testRunner) {

testRunner.waitUntilDone();
testRunner.dumpAsText();

accessibilityController.addNotificationListener(() => {
  try {
    document.open();
    document.write();
    gc();
  } catch(e) {
  }

  testRunner.notifyDone();
});

var docElement = document.body ? document.body : document.documentElement;
tCF3 = document.createElementNS("http://www.w3.org/1999/xhtml", "frame");
docElement.appendChild(tCF3);

}

</script>