<!DOCTYPE html>

<html>
<head>
  <style>
    #target {
      position: absolute;
      background-color: green;
      z-index: 0;
      overflow: hidden;
      left: 0px;
      top: 0px;
      width: 200px;
      height: 200px;
    }
    #inner {
      background-color: red;
      -webkit-transform: translateZ(0);
      width: 100px;
      height: 100px;
    }
  </style>
  <script type="text/javascript" charset="utf-8">
    if (window.testRunner)
      testRunner.dumpAsText();

    function doTest() {
      if (window.internals)
          window.internals.startTrackingRepaints();

      document.getElementById("target").style.left = '300px';

      if (window.internals) {
          document.getElementById('layers').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
          window.internals.stopTrackingRepaints();
      }
    }

    window.addEventListener('load', doTest, false);
  </script>
</head>
<body>
  <div id='target'>
    <div id='inner'></div>
  </div>
</body>
<pre id="layers"></pre>
</html>