They've been working on adding Rust support to Chromium for a while now, mainly focused on how to make interacting between the C++ and Rust easier. As opposed to your down voters, the people who actually work on the code base seem to understand the benefits.

https://security.googleblog.com/2023/01/supporting-use-of-ru...

https://chromium.googlesource.com/chromium/src/+/refs/heads/...

https://github.com/google/crubit