Merge "Add docs for ASurfaceControl default behavior" into udc-dev am:...

Merge "Add docs for ASurfaceControl default behavior" into udc-dev am: 85bffd53 am: 6bb4d0d0 am: 46d249f3 am: 15bcb8a0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/22871136



Change-Id: I2ba47b3da95908899b3d744c4149a6886d2ab7e5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>