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<!DOCTYPE html>
<html>
<head>
<style type="text/css" media="screen">
.trigger {
width: 20px;
height: 20px;
background-color: blue;
transform: translateZ(0);
}
.container {
position: relative;
z-index: 0;
top: -10px;
height: 120px;
width: 120px;
padding: 10px;
border: 1px solid black;
}
.box {
position: relative;
height: 100px;
width: 100px;
margin: 10px;
background-color: silver;
}
</style>
</head>
<script>
if (window.testRunner) {
testRunner.dumpAsText();
testRunner.waitUntilDone();
}
function doTest()
{
if (window.testRunner) {
document.getElementById('layertree').innerText = window.internals.layerTreeAsText(document);
testRunner.notifyDone();
}
}
window.addEventListener('load', doTest, false);
</script>
<body>
<div class="trigger"></div>
<div class="container">
<div class="child box">
<!-- This box doesn't need its own layer. -->
</div>
</div>
<pre id="layertree"></pre>
</body>
</html>
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