Upgrade rust/crates/protobuf to 2.16.2 am: 52aa785a3a am: bb7fbaee53 am: a95c44e295 am: bbdccf9a16 am: 3cd76a50e7

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/protobuf/+/1361092

Change-Id: I1bdc3ca8aeb8f300d0d2b361c0339d8b561812fd
tree: 21599736960546d0214d82baf97afb5a29505e43
  1. benches/
  2. out/
  3. src/
  4. .cargo_vcs_info.json
  5. Android.bp
  6. build.rs
  7. Cargo.toml
  8. Cargo.toml.orig
  9. LICENSE.txt
  10. METADATA
  11. MODULE_LICENSE_BSD_LIKE
  12. OWNERS
  13. README.md
  14. regenerate.sh
README.md

How to develop rust-protobuf itself

cargo test --all to build everything.

If code generator is changed, code needs to be regenerated, see regenerate.sh.