The proxy classes Android(Embedded)ExternalSurface just provide a
simple API surface around AndroidView wrapping SurfaceView and
TextureView respectively. However, this prevents accessing the
underlying views directly, which is needed for full lifecycle
tracking by the Player and to access surface size updates (which
are not available when the API is reduced to just `Surface`).
Instead of the proxy classes, we can directly use AndroidView from
PlayerSurface. This allows to call the proper Player APIs to set
SurfaceView or TextureView, so that the Player can keep track of
the view lifecycle and update its internal state and size tracking
accordingly. Because the player keeps tracks of the lifecycle,
none of the callback structure in Android(Embedded)ExternalSurface
is needed, nor are the additional setters for options that are
all default.
PiperOrigin-RevId: 743079058