Opposed to only using "virtual" or both "virtual" and "override"
Created attachment 272837 [details] patch
Comment on attachment 272837 [details] patch This is good, but you should probably revise to include the rule about final. We want to use exactly one of final, override, and virtual.
Created attachment 273144 [details] patch for landing
Created attachment 273145 [details] patch for landing v2 changed bug title to reflect "final" keyword
landed in: http://trac.webkit.org/changeset/197643