iframe_sandbox_012.htm | Explore in Territory

<!DOCTYPE html>
<html>
<head>
    <title>Page with access to document.cookie</title>
</head>
<body>
    <script type="text/javascript">
        cookie = document.cookie;
        document.cookie = "name=browser";
        parent.window.postMessage("cookies are R/W", "*");
    </script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/html/semantics/embedded-content/the-iframe-element/support/iframe_sandbox_012.htm