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chromium/third_party/blink/web_tests/http/tests/security/popup-blocked-from-window-open.html 

<html> 
<body>
<script> 
if (window.testRunner) {
    testRunner.dumpAsText();
}

win = window.open("about:blank");
alert(win ? "FAIL" : "PASS");
</script> 
</body> 
</html>