These look like they are not really failing results as much as platform-specific results. I will land these results soon. Are these actually expected?
Committed the (failing?) expected results in http://trac.webkit.org/changeset/76976
I suspect that the difference is expected because of the difference in list box metrics between Windows and Mac. However, such difference would also be seen in the pixel results. So the pixel test must still be failing on Windows, and needs correct results committed.
http://trac.webkit.org/changeset/76976 might have broken Leopard Intel Release (Tests)
Added the pixel test results in http://trac.webkit.org/changeset/77021