| <!DOCTYPE html> |
| <style> |
| #clip { |
| overflow: hidden; |
| position: relative; |
| top: 300px; |
| } |
| #composited { |
| will-change: transform; |
| background: blue; |
| width: 200px; |
| height: 500px; |
| } |
| #spacer { |
| width: 200px; |
| height: 500px; |
| } |
| </style> |
| <!-- The test passes if the blue div is scrolled to the top of the screen. |
| --> |
| <div id="clip"> |
| <div id="composited"></div> |
| </div> |
| <div id="spacer"></div> |
| <script> |
| |
| function runTest() { |
| window.requestAnimationFrame(function() { |
| window.scrollBy(0, 300); |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }); |
| } |
| |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| onload = runTest; |
| </script> |
