chromium/third_party/blink/web_tests/external/wpt/webstorage/event_session_removeitem.html

<!DOCTYPE HTML>
<meta charset="utf-8">
<title>Web Storage Test: event - sessionStorage removeItem</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<div id="log"></div>

<script>

async_test(function(t) {
    sessionStorage.clear();
    t.add_cleanup(function() { sessionStorage.clear() });

    self.step = function(f) { t.step(f); };

    var event_index = 0;
    window.addEventListener('storage', t.step_func(function(event) {
        switch(++event_index) {
            case 1:
                assert_equals(event.key, "name", "set key");
                assert_equals(event.oldValue, null, "set oldValue");
                assert_equals(event.newValue, "user1", "set newValue");
                assert_equals(event.url, el.contentDocument.documentURI, "set url");
                assert_equals(event.storageArea, sessionStorage, "set storageArea");
                break;
            case 2:
                assert_equals(event.key, "name", "remove key");
                assert_equals(event.oldValue, "user1", "remove oldValue");
                assert_equals(event.newValue, null, "remove newValue");
                assert_equals(event.url, el.contentDocument.documentURI, "remove url");
                assert_equals(event.storageArea, sessionStorage, "remove storageArea");
                t.done();
                break;
        }
    }), false);

    var el = document.createElement("iframe");
    el.setAttribute('id', 'ifrm');
    el.setAttribute('src', 'resources/session_set_item_remove_iframe.html');
    document.body.appendChild(el);
}, "key property test of session event");
</script>