| <script> | |
| if (window.testRunner) | |
| testRunner.dumpAsText(); | |
| onload = ()=> { | |
| // Force layout first. | |
| document.documentElement.offsetTop; | |
| // Then expand the root frameset grid from 2x1 to 2x2. | |
| document.getElementById("rootSet").setAttribute("rows", "*, 0"); | |
| } | |
| </script> | |
| <frameset id="rootSet" cols="0, *"> | |
| <frame id="firstChild"></frame> | |
| <frame src="data:text/html, PASS if no crash or assertion failure."></frame> | |
| <frameset> | |
| <frame src="data:text/html,3"></frame> | |
| </frameset> | |
| </frameset> |