Add MLTS benchmark test for CrystalBall. am: f40c990a62 am: bb78b61f17 am: 497efbaaf7

Original change: https://android-review.googlesource.com/c/platform/test/mlts/benchmark/+/1587751

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I48e02f815153593a0d0fbc95be410ba653e9fab4