Merge "Update TEST_MAPPING" am: 4b59fafa69 am: fff67f58a3 am: e41b29a9d1 am: 6f9e76cd1c

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/downcast-rs/+/2004832

Change-Id: I8b0b2be89daf0abd9680a9491ffa1ac90716f3fc