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| 1 <!DOCTYPE html> | |
| 2 | |
| 3 <html> | |
| 4 <head> | |
| 5 <style type="text/css" media="screen"> | |
| 6 .box { | |
| 7 position: relative; | |
| 8 height: 100px; | |
| 9 width: 100px; | |
| 10 margin: 10px; | |
| 11 left: 0; | |
| 12 top: 0; | |
| 13 background-color: silver; | |
| 14 } | |
| 15 | |
| 16 .clipping { | |
| 17 position: relative; | |
| 18 z-index: 0; | |
| 19 width: 300px; | |
| 20 border: 1px solid black; | |
| 21 padding: 20px; | |
| 22 overflow: hidden; | |
| 23 } | |
| 24 | |
| 25 .composited { | |
| 26 transform: translateZ(0); | |
| 27 } | |
| 28 </style> | |
| 29 | |
| 30 <script> | |
| 31 if (window.testRunner) | |
| 32 testRunner.dumpAsText(); | |
| 33 | |
| 34 function dumpLayers() | |
| 35 { | |
| 36 var layersResult = document.getElementById('layers'); | |
| 37 if (window.testRunner) | |
| 38 layersResult.innerText = window.internals.layerTreeAsText(document); | |
| 39 | |
| 40 } | |
| 41 window.addEventListener('load', dumpLayers, false) | |
| 42 </script> | |
| 43 | |
| 44 </head> | |
| 45 <body> | |
| 46 | |
| 47 <div class="clipping"> | |
| 48 This layer should not have backing store. | |
| 49 <div class="clipping"> | |
| 50 This layer should not have backing store. | |
| 51 <div class="box composited"> | |
| 52 </div> | |
| 53 </div> | |
| 54 </div> | |
| 55 | |
| 56 <pre id="layers">Layer tree goes here in DRT</pre> | |
| 57 | |
| 58 </body> | |
| 59 </html> | |
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