WebKitGTK+ CSS features should go aligned with last Safari versions. Safari 7 corresponds to WebKit 537.71 so we can check the enabled and disabled CSS features in the following file: http://trac.webkit.org/browser/tags/Safari-537.71/Source/WebCore/Configurations/FeatureDefines.xcconfig
Created attachment 217716 [details] Patch CSS Filters are enabled in Safari, but LayouTests don't pass in WebKitGTK+ so we cannot enable it by default yet (see bug #99026).
Comment on attachment 217716 [details] Patch Thanks.
Comment on attachment 217716 [details] Patch Clearing flags on attachment: 217716 Committed r159716: <http://trac.webkit.org/changeset/159716>
All reviewed patches have been landed. Closing bug.