Merge "Add docs for ASurfaceControl default behavior" into udc-dev am: 85bffd53 am: 0f4b3ed6

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



Change-Id: I31f8454d5c5a09dcd4b6e802f31fcf342c8404ee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>