Add encoders for MediaPlayerEnum enums
<rdar://problem/57842985>
Created attachment 385417 [details] Patch
Created attachment 385418 [details] Patch
Created attachment 385420 [details] Patch
Comment on attachment 385420 [details] Patch Clearing flags on attachment: 385420 Committed r253397: <https://trac.webkit.org/changeset/253397>
All reviewed patches have been landed. Closing bug.