[automerger skipped] DO NOT MERGE: Use prebuilts of the ART Module by default (reland). am: 6a3fd20b am: ba6ac1cd -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/15200786

Change-Id: I4e6ee16de925c5db47f83b66b5feb207b7a812f1