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<!DOCTYPE html>
<!-- This document is used for the test `move-node-local-root-events-still-fire.html` -->
<script src="/common/get-host-info.sub.js"></script>
<body>
<script>
(async function() {
// This iframe will be cross-origin to the current document, but same-origin
// with its grandparent, our direct parent.
const iframe = document.createElement('iframe');
// A URL that's cross-origin to this document, and same-origin to our parent.
const crossOriginChildURL = new URL('create-button-with-pointerdown-listener.html', location.href).toString().replace(location.origin, get_host_info().HTTP_ORIGIN);
iframe.src = crossOriginChildURL;
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.append(iframe);
await loadPromise;
parent.postMessage('grandchild loaded', '*');
})();
</script>
</body>