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<!DOCTYPE html>
<html>
<head>
<script src="../../resources/run-after-layout-and-paint.js"></script>
<style type="text/css" media="screen">
iframe {
border: 10px solid black;
padding: 5px;
margin: 20px;
height: 150px;
width: 300px;
}
.collapsed {
width: 0;
}
.overlay {
position: absolute;
width: 50px;
height: 50px;
top: 5px;
left: 5px;
background-color: rgba(0, 0, 0, 0.2);
}
</style>
<script type="text/javascript" charset="utf-8">
if (window.testRunner) {
testRunner.dumpAsText();
testRunner.waitUntilDone();
}
function doTest()
{
var hadLayers = false;
if (window.testRunner) {
var layers = window.internals.layerTreeAsText(document);
hadLayers = layers != "";
}
runAfterLayoutAndPaint(function() {
document.getElementById('iframe').className = 'collapsed';
if (window.testRunner) {
var haveLayers = window.internals.layerTreeAsText(document) != "";
var result;
if (hadLayers && haveLayers)
result = "PASS: Had layers before and after";
else
result = "FAIL: Layers should have stayed. hadLayers = " + hadLayers + ", haveLayers = " + haveLayers;
document.getElementById('result').innerHTML = result;
testRunner.notifyDone();
}
});
}
window.addEventListener('load', doTest, false);
</script>
</head>
<body>
<!-- The parent document may into compositing mode by the iframe. -->
<iframe id="iframe" src="resources/composited-subframe.html"></iframe>
<div class="overlay">
</div>
<div id="result">Test only works in DRT</div>
</body>
</html>
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