Patch forthcoming.
Created attachment 229522
Created attachment 229523 [details] the patch
Comment on attachment 229523 [details] the patch rs=me.
Landed in this - https://github.com/WebKit/WebKit/commit/84fdcfd834654fe25e85bfa78d71401f4e22c93a and didn't backed out. Marking this as "RESOLVED FIXED". Thanks!