Merge "Add a cargo2android flag to disable generating TEST_MAPPING." am: 4d82acfeee am: 4c0bf9ff7b am: b7f21b62d3

Original change: https://android-review.googlesource.com/c/platform/development/+/1667071

Change-Id: Iff5ca2c65341ff305a1f4f6b265931fd7fe1caa2