r183221 disabled QTKit by default on some version of OS X. Because AVFoundation is always disabled by default, no media engine is enabled until Settings are updated. Fix this by enabling AVFoundation by default on the versions where QTKit is disabled by default.
Created attachment 254496 [details]
Comment on attachment 254496 [details]
Clearing flags on attachment: 254496
Committed r185333: <http://trac.webkit.org/changeset/185333>
All reviewed patches have been landed. Closing bug.