<https://trac.webkit.org/r213643> introduced some unnecessary -respondsToSelector: checks. Patch forthcoming.
Created attachment 304198 [details] Remove runtime checks
Comment on attachment 304198 [details] Remove runtime checks Clearing flags on attachment: 304198 Committed r213771: <http://trac.webkit.org/changeset/213771>
All reviewed patches have been landed. Closing bug.