Merge "Refresh Android.bp, cargo2android.json, TEST_MAPPING." am: 99dc3539da am: 12984bfa87 am: a6eda40d4c am: d68c3e4c8a

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/structopt-derive/+/1912697

Change-Id: I909ddfedccc203b3ef06841f4626530ec660a2bb