BlackBerry has its own implementation in platform/graphics/blackberry/GradientBlackBerry.cpp.
Created attachment 192900 [details] Patch
Comment on attachment 192900 [details] Patch OK.
Comment on attachment 192900 [details] Patch Clearing flags on attachment: 192900 Committed r145834: <http://trac.webkit.org/changeset/145834>
All reviewed patches have been landed. Closing bug.