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Test Info: Warnings

<!DOCTYPE html>
<meta charset="utf-8">
<title>Test the sequence of events when reporting iframe timing.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/resource-loaders.js"></script>
promise_test(async t => {
const href = new URL('resources/', location.href);
await load.iframe(href);
const entries = performance.getEntriesByType('resource').filter(({name}) => name.startsWith(href));
assert_equals(entries.length, 1);
assert_equals(entries[0].initiatorType, 'iframe');
}, 'Iframes should report resource timing for redirect responses without a location');