| <!DOCTYPE html> |
| <title> |
| Tests that there is no crash when a layer's backing provider layer changes |
| and the layer is then removed. |
| </title> |
| |
| <style> |
| .positioned { |
| position: absolute; |
| left: 25px; |
| width: 100px; |
| height: 100px; |
| } |
| |
| .composited { |
| transform: translateZ(0); |
| background-color: blue; |
| } |
| |
| .stackingContext { |
| position: absolute; |
| z-index: 0; |
| } |
| |
| #child1 { |
| background-color: orange; |
| } |
| |
| #child2 { |
| background-color: yellow; |
| } |
| |
| #grandchild { |
| background-color: pink; |
| } |
| |
| #container { |
| background-color: green; |
| } |
| </style> |
| |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| function triggerLayout() { |
| document.body.scrollTop; |
| } |
| |
| window.onload = function() { |
| triggerLayout(); |
| |
| document.getElementById('container').classList.add("stackingContext"); |
| document.getElementById('child1').classList.add("composited"); |
| triggerLayout(); |
| |
| document.getElementById('grandchild').classList.remove("positioned"); |
| triggerLayout(); |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| } |
| </script> |
| |
| <p>This test should not crash or assert.</p> |
| <div class="composited positioned"></div> |
| <div id="container" class="positioned"> |
| <div id="child1" class="positioned"></div> |
| <div id="child2" class="positioned"> |
| <div id="grandchild" class="positioned"></div> |
| </div> |
| </div> |
| |
