block_alert.html | Explore in Territory

<html>
  <head>
    <title>Block alert from blocked popup?</title>
    <script>
      if (location.search.indexOf("popup") != -1) {
        document.write("This should still be inside the tab, but it is now " +
          "in a new window!");
        alert("The popup has been \"popped out\" of the tab");
      } else {
        window.open("?popup");
      }
    </script>
  </head>
<body>
<h1>Block alert from blocked popup?</h1>
</body>
</html>

chromium/chrome/test/data/constrained_files/block_alert.html