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<!DOCTYPE HTML>
<meta charset=utf-8>
<title>ElementTiming: element is only exposed for fully active documents.</title>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe src="resources/iframe-stores-entry.html" id="ifr"></iframe>
<script>
let t = async_test('Only expose element attribute for fully active documents');
t.step(() => {
assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented");
});
window.triggerTest = t.step_func_done(elementEntry => {
assert_not_equals(elementEntry.element, null);
const iframe = document.getElementById('ifr');
iframe.remove();
assert_equals(elementEntry.element, null);
});
</script>
</body>
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