Clients of the WK2 C-API don't have their mediaContentTypesRequiringHardwareSupport setting initialized correctly.
Created attachment 312281 [details] Patch
Comment on attachment 312281 [details] Patch Clearing flags on attachment: 312281 Committed r217935: <http://trac.webkit.org/changeset/217935>
All reviewed patches have been landed. Closing bug.