Remove CentralSurfaces from ShadeController

The methods ShadeController was calling in CentralSurfaces are now
in ShadeController. A small amount of interaction between the two
classes had to remain, but it's now a small interface instead of a
direct dependency on CentralSurfaces. This work is far from done,
but the dependency was removed and atest passed, so it seemed like
a good place to stop and review.

Bug: 249277686
Test: manual and atest
Change-Id: Ide5c6f1964a83073f39323c083ea1ccc281bc8fe