document-domain-iframe-for-local-storage.html

<html>
<head>
<script>
try {
	document.domain = document.domain;
	var c = window.localStorage;
	document.write('No exception');
} catch (exception) {
	document.write(exception.name);
}
</script>
</head>
<body>
</body>
</head>

chromium/third_party/blink/web_tests/http/tests/security/resources/document-domain-iframe-for-local-storage.html