| <!DOCTYPE html> <!-- webkit-test-runner [ internal:AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <style> |
| #scroller { |
| margin: 50px; |
| height: 512px; |
| width: 400px; |
| overflow-y: scroll; |
| border: 1px solid black; |
| } |
| |
| .contents { |
| height: 3000px; |
| background-image: repeating-linear-gradient(white, silver 400px); |
| } |
| |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| function startTest() |
| { |
| requestAnimationFrame(() => { |
| scroller.scrollTop = 2000; |
| |
| requestAnimationFrame(() => { |
| scroller.scrollTop = 1800; |
| |
| document.getElementById('layers').innerText = internals.layerTreeAsText(document, |
| internals.LAYER_TREE_INCLUDES_VISIBLE_RECTS | internals.LAYER_TREE_INCLUDES_TILE_CACHES); |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }); |
| }); |
| } |
| |
| window.addEventListener('load', startTest, false); |
| </script> |
| </head> |
| <body> |
| |
| <div id="scroller"> |
| <div class="contents"> |
| </div> |
| </div> |
| |
| <pre id="layers">Layer tree goes here</p> |
| </body> |
| </html> |
