We currently use displaySurface == placeholderSurface IF codec != null
as a signal that the codec is configured with a placeholder. In the
future, this placeholder might not be needed and we can decouple this
state a bit better by leaving displaySurface == null in this case and
only using placeholderSurface instead of null when setting a Surface
to the codec.
PiperOrigin-RevId: 652391729
e96ca5a242