*** Original commit ***
ExoPlayer: Add setVideoFrameProcessorFactory().
This allows apps to use a custom VideoFrameProcessor implementation for video
playback. This may be useful, for example, when outputting to a texture.
***
PiperOrigin-RevId: 536391597
(cherry picked from commit dbbb0919075a9c95f45d51307b434eda4c4744bd)
