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<!doctype html>
<meta charset="utf-8">
<title>Change the frame heriarchy</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<iframe src="change_child.html"></iframe>
</body>
<script>
async_test(function(t) {
var timer = window.setInterval(t.step_func(poll), 100);
function poll() {
// We wait for the grandchild's script to set the custom attribtue.
// Note that if this test passes, the grandchild's script must have been run twice,
// once to trigger the move from the child to here, and once to pass this test.
if (document.body.getAttribute("data-contains-grandchild")) {
window.clearTimeout(timer);
t.done();
}
}
});
</script>
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