| <!DOCTYPE html> |
| |
| <html> |
| <head> |
| <style> |
| #box { |
| width: 100px; |
| height: 100px; |
| margin: 10px; |
| background-color: blue; |
| } |
| |
| .composited { |
| -webkit-transform: translateZ(0); |
| } |
| |
| iframe { |
| display: none; |
| } |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| function doTest() |
| { |
| document.body.offsetWidth; |
| |
| if (window.internals) |
| internals.startTrackingLayerFlushes(); |
| |
| document.getElementById('box').classList.add('composited'); |
| |
| if (window.internals) |
| internals.updateLayoutIgnorePendingStylesheetsAndRunPostLayoutTasks(); |
| |
| window.setTimeout(function() { |
| var flushCount = 0; |
| if (window.internals) |
| flushCount = internals.layerFlushCount(); |
| |
| var result; |
| if (flushCount == 1 || flushCount == 2) |
| result = 'PASS: saw 1 or 2 layer flushes'; |
| else |
| result = 'FAIL: saw ' + flushCount + ' layer flushes, expected 1 or possibly 2.'; |
| |
| document.getElementById('result').textContent = result; |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }, 10); |
| } |
| |
| window.addEventListener('load', doTest, false); |
| </script> |
| </head> |
| <body> |
| <p id="result"></p> |
| <div id="box"></div> |
| <iframe src="resources/subframe.html"></iframe> |
| </body> |
| </html> |
