Merge "Replace #apex with #systemapi" am: dc5a1d6ba1

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2393584

Change-Id: I98819cb72ca0214fff5437517df8aca76aa10a92
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>