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Test Info:

<!DOCTYPE HTML>
<meta charset=utf-8>
<title>Long Animation Frame Timing: iframes (self)</title>
<meta name="timeout" content="long">
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="/common/utils.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="resources/utils.js"></script>
<div id="log"></div>
<script>
const host_info = get_host_info();
for (const origin of ["ORIGIN", "REMOTE_ORIGIN", "HTTP_NOTSAMESITE_ORIGIN"]) {
promise_test(async t => {
const [executor] = await prepare_exec_iframe(t, host_info[origin]);
const entry = await executor.execute_script(async (duration) => {
const entryPromise = new Promise(resolve => new PerformanceObserver(list => {
resolve(list.getEntries(0));
}).observe({entryTypes: ["long-animation-frame"]}));
const deadline = performance.now() + duration;
while (performance.now() < deadline) {}
return entryPromise;
}, [very_long_frame_duration]);
}, `frames receive own long animation frames (${origin})`);
}
</script>
</body>