<script>
if (window.testRunner)
    testRunner.dumpAsText();
</script>
<meta http-equiv="Content-Security-Policy" content="frame-src 'none'; object-src 'none'">
These frames should not be blocked by Content-Security-Policy.  It's pointless
to block about:blank iframes because blocking a frame just results in
displaying about:blank anyway!
<iframe src="about:blank"></iframe>
<object type="text/html" data="about:blank"></object>