Merge "Visualizer: Add AIDL placeholder implementation and vts test cases" am: 7f62d4e5f6 am: d3859a1dda

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2352968

Change-Id: I32c6014f9e2f0ce7287b17e1a0c8d6d8bfef4e22
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>