Merge "AIDL effect: Declare effectProxy class as final" am: 0c791f42bf am: 781acc7dbd am: d78ebd75f0

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2509715

Change-Id: I9cad3d18864e39311ae9455251e347712b2155dc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>