chromium/third_party/blink/web_tests/external/wpt/fenced-frame/resources/default-enabled-features-subframe-iframe.https.html

<!DOCTYPE html>
<script src="utils.js"></script>
<script src="/common/get-host-info.sub.js"></script>

<body>
<script>
// This page is loaded into an iframe that is nested within a fenced frame tree.
// This is used to tell the test whether policies that are restricted by a
// fenced frame's document policies also are restricted in subframes.
const [key] = parseKeylist();

const allows_shared_storage =
    document.featurePolicy.allowsFeature('shared-storage');
const allows_select_url =
    document.featurePolicy.allowsFeature('shared-storage-select-url');

writeValueToServer(key, allows_shared_storage + "," + allows_select_url);
</script>
</body>