Rename CentralSurfacesInt back to CentralSurfaces.

Necessary step to retain git history of CentralSurfacesImpl.

Bug: 229228871
Test: manual
Change-Id: If4152279970090eeb3ea34307dfade5873e9dbf3
Merged-In: If4152279970090eeb3ea34307dfade5873e9dbf3
(cherry picked from commit 4a38c28680cf26baafee1c61186b183bf6a945cf)
94 files changed