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Test Info: Warnings

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<meta name="referrer" content="no-referrer">
promise_test(async () => {
assert_implements('HTMLPortalElement' in self, 'HTMLPortalElement is required for this test');
let portal = document.createElement('portal');
let referrerPromise = new Promise((resolve, reject) => {
portal.addEventListener('message', e => resolve(, {once: true});
portal.src = 'resources/postmessage-referrer.sub.html';
try {
let {httpReferrer, documentReferrer} = await referrerPromise;
assert_equals(httpReferrer, 'no-http-referrer', 'No HTTP Referer header should be sent');
assert_equals(documentReferrer, 'no-document-referrer', 'No document.referrer should be present');
} finally {
}, "portal contents should be loaded with no referrer if document requests it");