OSX and iOS don't support the non-separable blend modes (hue, saturation, color and luminosity) in composited mode. The spec (http://dev.w3.org/fxtf/compositing-1/#mix-blend-mode) is currently in CR but will be updated.
Created attachment 229598 [details] Patch
Comment on attachment 229598 [details] Patch r=me but I suggest you remove the backend code as well. The stuff in BlahFiltersBlah that is empty code with a comment saying they are not implemented.
Created attachment 229808 [details] Patch
Comment on attachment 229808 [details] Patch Rejecting attachment 229808 [details] from review queue. cabanier@adobe.com does not have reviewer permissions according to http://trac.webkit.org/browser/trunk/Tools/Scripts/webkitpy/common/config/contributors.json. - If you do not have reviewer rights please read http://webkit.org/coding/contributing.html for instructions on how to use bugzilla flags. - If you have reviewer rights please correct the error in Tools/Scripts/webkitpy/common/config/contributors.json by adding yourself to the file (no review needed). The commit-queue restarts itself every 2 hours. After restart the commit-queue will correctly respect your reviewer rights.
Comment on attachment 229808 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=229808&action=review > Source/WebCore/ChangeLog:8 > + Removed support for non-sep blend modes from the CSS parser. Please don't abbreviate non-seperable.
Created attachment 229824 [details] Patch for landing
Comment on attachment 229824 [details] Patch for landing Clearing flags on attachment: 229824 Committed r167620: <http://trac.webkit.org/changeset/167620>
All reviewed patches have been landed. Closing bug.