Merge changes from topic "VSyncDispatch_unregisterCallback" into udc-dev am:...

Merge changes from topic "VSyncDispatch_unregisterCallback" into udc-dev am: 6b567cad am: c6926a24

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/22817336



Change-Id: I7c853d7eb9c36106f3e8e8f6ab285e296e127fc6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>