ChromeOS plays these codecs. Media capabilities indexes video stats in the local DB off of the codec profile, so every codec should have a profile entry, even if the codec just has one profile (e.g. theora). 

The mapping of codec to profile happens here
https://cs.chromium.org/chromium/src/media/ffmpeg/ffmpeg_common.cc?rcl=95d0a57ff661b75917ba2d5706fee99222db7bda&l=508

And there are a dozen other switches that need trivial updates
https://cs.chromium.org/search/?q=THEORAPROFILE_+-f:debug&m=25&type=cs

See  issue 902634  for sample content and discussion.