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chromium/third_party/blink/web_tests/http/tests/navigation/resources/slowtimerredirect.html 

<html>
<script>
    if (window.testRunner)
        testRunner.waitUntilDone();
    setTimeout("window.location.replace('success200.html')", 5000)
</script>

<body>
Test failed! - This page uses a timeout redirect to load another page.
Unlike slow meta redirect, slow timers do not cause an intermediate
page to appear in the back/forward list.
</body>
</html>