Merge "Allow android.os.flags to be used by ART." into main am: 1bf8d3aa9e

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3380704

Change-Id: Id96406402363d9e36602b4347743ae86f725663a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>