arbitrary-header-in-early-hints.html

<!DOCTYPE html>
<meta charset=utf-8>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
promise_test(async (t) => {
    // Pass when the page is successfully loaded.
}, "An Early hints response contains an arbitrary header and it should have no effect.");
</script>
</body>

chromium/third_party/blink/web_tests/external/wpt/loading/early-hints/resources/arbitrary-header-in-early-hints.html