Merge "CAS: Add missing @hide annotations" am: 3d4c5a4464 am: 1bae1c30bd am: 57d181069a

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

Change-Id: Ia73fa145c50e477915439d974075232e2e340235
Signed-off-by: Automerger Merge Worker <[email protected]>