popup-webui.html | Explore in Territory

<html>
<head>
<title>Check that a regular page can't create e.g. a WebUI popup</title>
<script>
function test() {
  window.open("chrome://settings");
}
</script>
</head>
<body onload="test()">
pop-up test page
</body>
</html>

chromium/chrome/test/data/popup_blocker/popup-webui.html