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<!DOCTYPE html>
<head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
</body>
<script>
promise_test(() => {
return new Promise(resolve => {
performance.clearResourceTimings()
// Create child iframe with an embedded frame that is cross-origin with its parent but same-origin with the current frame.
const crossOriginChildFrame = document.createElement('iframe')
crossOriginChildFrame.src = "http://{{hosts[][www]}}:{{ports[http][0]}}/performance-timeline/resources/parent-frame-with-cross-origin-child.sub.html"
document.body.appendChild(crossOriginChildFrame)
// Listen for postMessage() from child frame.
window.addEventListener("message", e => {
// 0 entries for parent, 4 for child, 0 for grandchild.
assert_equals(e.data, 4)
const entries = performance.getEntries(true)
// 3 entries for parent, 0 for child, 2 for grandchild.
assert_equals(entries.length, 5)
resolve()
})
})
}, "GetEntries of a Cross-Origin child frame with one Same-Origin grandchild frame")
</script>
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