1<!doctype html>
2<script src="/resources/testharness.js"></script>
3<script src="/resources/testharnessreport.js"></script>
4<script>
5  const t = async_test("Test that a postMessage of a performance entry fails");
6  addEventListener("message", t.step_func_done(e => {
7    assert_equals(e.data, "PASS");
8  }));
9</script>
10<iframe src="resources/postmessage-entry.html"></iframe>
11