Introduced in https://bugs.webkit.org/show_bug.cgi?id=117365, not needed after https://bugs.webkit.org/show_bug.cgi?id=121828 which turned on layers by default on all regions.
Created attachment 213231 [details] Patch
Comment on attachment 213231 [details] Patch r=me
Comment on attachment 213231 [details] Patch Clearing flags on attachment: 213231 Committed r156836: <http://trac.webkit.org/changeset/156836>
All reviewed patches have been landed. Closing bug.