chromium/third_party/blink/web_tests/http/tests/security/stylesheet-href-redirect.html

<html>
<head>
<link rel="stylesheet" type="text/css"
  href="http://localhost:8000/security/resources/redir.php?url=http://localhost:8000/security/resources/cssStyle.css">
<script>
if (window.testRunner)
    testRunner.dumpAsText();

function log(msg) {
    document.getElementById('console').innerHTML = msg;
}

window.onload = function() {
    log(document.styleSheets[0].href);
}
</script>
</head>
<body>
A style sheet's href should be the original URL, not the final URL, of the
redirect chain:
<div id="console">Waiting...</div>
</body>
</html>