CORS preflights are no longer able to deal with client certificate authentication since we've moved CORS-preflighting to the network process.
<rdar://problem/42546319>
Created attachment 346654 [details] Patch
Comment on attachment 346654 [details] Patch r=me. This fixes a bug similar to https://bugs.webkit.org/show_bug.cgi?id=186402
Comment on attachment 346654 [details] Patch Clearing flags on attachment: 346654 Committed r234626: <https://trac.webkit.org/changeset/234626>
All reviewed patches have been landed. Closing bug.