Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/fast/parser/resources/xhtml-close-while-parsing-target.xhtml 

<html xmlns="http://www.w3.org/1999/xhtml">
<body>
    <script>
    window.close();
    if (window.testRunner)
        testRunner.notifyDone();
    </script>
</body>
</html>