Rename CentralSurfacesInt back to CentralSurfaces.

Necessary step to retain git history of CentralSurfacesImpl.

Bug: 229228871
Test: manual
Change-Id: If4152279970090eeb3ea34307dfade5873e9dbf3
Merged-In: If4152279970090eeb3ea34307dfade5873e9dbf3
diff --git a/packages/SystemUI/proguard.flags b/packages/SystemUI/proguard.flags
index 0dc6c69..e74b6c7 100644
--- a/packages/SystemUI/proguard.flags
+++ b/packages/SystemUI/proguard.flags
@@ -3,7 +3,7 @@
 
 -keep class com.android.systemui.recents.OverviewProxyRecentsImpl
 -keep class com.android.systemui.statusbar.car.CarStatusBar
--keep class com.android.systemui.statusbar.phone.CentralSurfacesInt
+-keep class com.android.systemui.statusbar.phone.CentralSurfaces
 -keep class com.android.systemui.statusbar.tv.TvStatusBar
 -keep class com.android.systemui.car.CarSystemUIFactory
 -keep class com.android.systemui.SystemUIFactory