Merge "Add flagging libraries for trade-in mode." into main am: 8639b7d3a6

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3279894

Change-Id: Idd0bc10e3c80a83228aedb7b282afe485a4f8373
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>