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<!doctype html>
<html>
<body>
<script>
function nestedLoaded() {
parent.postMessage({ type: 'NESTED_LOADED' }, '*');
}
</script>
<iframe id="nested" srcdoc="<div></div>" onload="nestedLoaded()"></iframe>
<script>
// Helper routine to make it slightly easier for our parent to find
// the nested frame.
function nested() {
return document.getElementById('nested').contentWindow;
}
// NOTE: Make sure not to touch the iframe directly here. We want to
// test the case where the initial about:blank document is not
// directly accessed before load.
</script>
</body>
</html>