The CSSParser class declares a yyparse() method, but it is unused and not even defined. It seems to have been like this since the introduction of CSSParser: http://trac.webkit.org/changeset/3695
Created attachment 158376 [details] Patch
Comment on attachment 158376 [details] Patch Clearing flags on attachment: 158376 Committed r125589: <http://trac.webkit.org/changeset/125589>
All reviewed patches have been landed. Closing bug.