As explained on bug #167578 the plan is to rewrite this support later. So we can remove these files for now.
Created attachment 300107 [details] Patch
Comment on attachment 300107 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=300107&action=review > Source/WebKit2/ChangeLog:10 > + One reason is that CSS Grid Layout is going to be enabeld by default now, enabeld -> enabled
Created attachment 300108 [details] Patch for landing
Created attachment 300109 [details] Rebased patch
Comment on attachment 300109 [details] Rebased patch Clearing flags on attachment: 300109 Committed r211364: <http://trac.webkit.org/changeset/211364>
All reviewed patches have been landed. Closing bug.