Work on the new flexbox will be behind a compile time flag
Created attachment 96451 [details] Patch
I intentionally haven't added the changes for gyp to enable this flag. I plan on adding that after we finish merging features.gypi and features_overrides.gypi.
Comment on attachment 96451 [details] Patch Clearing flags on attachment: 96451 Committed r88576: <http://trac.webkit.org/changeset/88576>
All reviewed patches have been landed. Closing bug.