tree fcb3d10b1979cb73af80ab16858de78e0e26bd03
parent 4963fe84c8cac3e5d7796af2fa13f6994e139336
author Adam Cozzette <acozzette@google.com> 1758911873 -0700
committer Copybara-Service <copybara-worker@google.com> 1759438228 -0700

Expose serialized descriptors in Rust-upb

The goal is to make it possible for gRPC to implement the reflection service
[here](https://github.com/grpc/grpc-proto/blob/23f5b568eefcb876e6ebc3b01725f1f20cff999e/grpc/reflection/v1/reflection.proto).

In C++ we have a global descriptor pool, but that pattern is not an option here
because we need to be able to handle the possibility of multiple proto files
with the same name linked into a single binary.

PiperOrigin-RevId: 811896543