ancestor-chain-cross-site-top-level.html

<!doctype html>
<head>
<title>Test partitioned cookies ancestor chain: top level cross-site </title>
<script src="/resources/testharness.js"></script>
<script src="/cookies/resources/testharness-helpers.js"></script>
</head>
<script>
    //Redirect the page back to the same-site.
    const params = new URLSearchParams(new URL(window.location.href).search);
    const hostName = params.get('host');
    const siteDir = "/cookies/partitioned-cookies/";
    // Use redirect-and-append-cookie-header.php to make the http cookie
    // headers available on the redirect.
    const sameSiteUrl = new URL(siteDir + "resources/redirect-and-append-cookie-header.php?"
        + "location="+ siteDir + "ancestor-chain-top-level-redirect.https.html"+"?redirect=true",
        `https://${hostName}:${window.location.port}`);
    window.location=sameSiteUrl.href;
</script>

chromium/third_party/blink/web_tests/http/tests/cookies/partitioned-cookies/resources/ancestor-chain-cross-site-top-level.html