This piece of code was lost in the final patch of https://bugs.webkit.org/show_bug.cgi?id=96627 . The gl context is used as key in a hash map and cannot be NULL. A patch is coming.
Created attachment 168726 [details] Patch I have asked for this code in https://bugs.webkit.org/show_bug.cgi?id=96627#c13, and it was added in https://bug-96627-attachments.webkit.org/attachment.cgi?id=167522 , but was lost in the final patch.
Comment on attachment 168726 [details] Patch Clearing flags on attachment: 168726 Committed r131355: <http://trac.webkit.org/changeset/131355>
All reviewed patches have been landed. Closing bug.