chromium/third_party/blink/web_tests/external/wpt/webstorage/resources/session_change_item_iframe.html

<!DOCTYPE HTML>
<html>
 <body>
    <script>
        if (('sessionStorage' in window) && window.sessionStorage !== null){
            try {
                sessionStorage.setItem("name", "user1");
                sessionStorage.setItem("name", "user2");
            } catch (e) {
                parent.fail("setItem method is failed.");
            }
            sessionStorage.clear();
        } else {
            parent.fail("sessionStorage is not supported.");
        }
    </script>
 </body>
</html>