Add multi-dex support to hiddenapi am: 86b5f86d8d am: 0c9b2ad43a

Original change: https://android-review.googlesource.com/c/platform/art/+/2425068

Change-Id: I2018ac0d2e5c3b1b27105a60d790d23df963c5b5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>