Merge "CAS: Add missing @hide annotations" am: 3d4c5a4464 am: 1bae1c30bd

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2361674

Change-Id: Icc2b289001b4df5d5bad619098a317d1d9b56bb6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>