Fix scrollbar layers being misplaced with a clipped owner layer
See https://code.google.com/p/chromium/issues/detail?id=132839.
Created attachment 148370 [details] Patch
Comment on attachment 148370 [details] Patch Clearing flags on attachment: 148370 Committed r120750: <http://trac.webkit.org/changeset/120750>
All reviewed patches have been landed. Closing bug.