huangdarwin 4230ea94e9 HDR: Remove ColorInfo.SDR constant
The SDR constant also specified a color space and range, in addition to
C.COLOR_TRANSFER_SDR. However, it turns out that SDR videos may use different color
space and range values, so following prior ExoPlayer conventions to have `null`
mean "generic SDR" is preferable here.

PiperOrigin-RevId: 459296746
2022-07-07 18:15:38 +00:00
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2022-07-07 18:15:38 +00:00