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Test Info:

<!doctype html>
<body>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src=/browsing-topics/resources/header-util.sub.js></script>
<script>
async_test(t => {
test_topics_iframe_navigation_header(
t, /*has_browsing_topics_attribute=*/true, /*is_same_origin=*/false,
expect_topics_header_unavailable);
}, 'test <iframe browsingtopics src=[url]></iframe> in an insecure context, where the browsingtopics attribute is set via IDL.');
async_test(t => {
const same_origin_src = '/browsing-topics/resources/check-topics-request-header-notify-parent.py';
const cross_origin_src = 'https://{{domains[www]}}:{{ports[https][0]}}' +
same_origin_src;
let frame = document.createElement('iframe');
window.addEventListener('message', t.step_func(function handler(evt) {
if (evt.source === frame.contentWindow) {
assert_equals(evt.data.topicsHeader, 'NO_TOPICS_HEADER');
document.body.removeChild(frame);
window.removeEventListener('message', handler);
t.done();
}
}));
document.body.appendChild(frame);
frame.setAttribute("browsingtopics", "123");
frame.src = cross_origin_src;
}, 'test <iframe browsingtopics src=[url]></iframe> in an insecure context, where the browsingtopics attribute is set via setAttribute().');
</script>
</body>