page_displays_insecure_form_target_blank.html

<html>
<head><title>Page that displays an insecure form with target=_blank</title>
<script>
 function submitForm() {
   form = document.getElementById("insecureForm");
   form.submit();
 }
</script>
</head>
<body>
This page contains an form which targets a non-secure URL on a new tab,
causing insecure content (when this page is loaded over https).<br>
<form id="insecureForm" target="_blank" action="http://does-not-exist.test/ssl/google_files/logo.gif">
<input type="submit" />
</form>

</body>
</html>

chromium/chrome/test/data/ssl/page_displays_insecure_form_target_blank.html