[Mac] Prepend "Media" to FormatReader, SampleCursor, and TrackReader class names
Created attachment 417191 [details] Patch
Created attachment 417194 [details] Patch
Created attachment 417195 [details] Patch
Committed r271253: <https://trac.webkit.org/changeset/271253> All reviewed patches have been landed. Closing bug and clearing flags on attachment 417195 [details].
<rdar://problem/72899975>