fenced-frame/autofocus-denied.https.html

<!DOCTYPE html>
<title>Autofocusing is blocked in a fenced frame</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="resources/utils.js"></script>

<body>
<script>
promise_test(async () => {
  const frame = attachFencedFrameContext();
  let autofocusIsFocused = await frame.execute(async () => {
    let autofocusInput = document.createElement('input');
    autofocusInput.autofocus = true;
    document.body.appendChild(autofocusInput);
    await new Promise(resolve => requestAnimationFrame(resolve));
    return document.activeElement == autofocusInput;
  });
  assert_false(autofocusIsFocused, "<input autofocus> received focus");
}, "Autofocusing is blocked on an element in a fenced frame as "+
     "it's treated like a cross-origin subframe.");
</script>
</body>
</html>