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if (window.testRunner) {
  testRunner.dumpAsText();
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function doTest() {
  document.getElementById('layers').innerText = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_DEVICE_SCALE);
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<p> Tests whether a compositing layer containing only an image uses a standard DPI backing store.</p>
<img src="resources/simple_image.png" style="transform: translateZ(0px);"></img>
<pre id="layers">Layer tree goes here in DRT</pre>
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