First, we need to generate expected results for this test. Second, I tried the test on one of our redhat linux server and it showed a hollow rectangle with no texts in it. On the same machine, the firefox generated the same results. However, on another machine running Ubuntu, it worked fine: texts were showing inside the rectangle. I think the problem is under X11 rendering. Can someone verify this on build bot? Thanks!
Created attachment 52315 [details] Patch
Comment on attachment 52315 [details] Patch LGTM.
Comment on attachment 52315 [details] Patch Looking at the scrollbar in the test, I see another bug: the arrow button is not at the bottom. I filed a bug about that this week, just to let you know.
Comment on attachment 52315 [details] Patch Clearing flags on attachment: 52315 Committed r57142: <http://trac.webkit.org/changeset/57142>
All reviewed patches have been landed. Closing bug.