b:/6278826
The SurfaceTextureTarget Filter was not unregistering the surface
on closing leading to crashes and blank screens.
Change-Id: Ia9f6fc69b92d5a5e2e1e3803969152d11528aa3d
This is part of the multi-project commit to move the filter-framework
from system/media/mca to frameworks/base/media/mca.
Note that the filter-framework will soon be replaced with a refactored
version currently under API review (also to go under frameworks/base).
This move is done now to unblock the PDK efforts.
Change-Id: I9f42be5a12a9e8157512be11f04e38e4548970be
