Yet once the Chromium team goes down that Rust to C++ FFI route, they will encounter the same old bugs outlined in this paper. [0] They might as well fork Servo and create their own engine from that, but even that is still a prototype worked on for years with zero C++ at least.

It's too early to see how the Chromium team will begin to work on this given it's only a plan, but maybe the unsafety and security issues are enough motivation to actually use Rust to C++ interop or a rewrite. But once again, this has been tried by some other projects and by just looking at the effort of a rewrite, they later concluded that it is not worth it. [1] [2]

Even better, just improve Servo instead. But I guess they would rather create their own fork, just like they did with WebKit.

[0] https://arxiv.org/pdf/2003.03296.pdf

[1] https://blogs.dust3d.org/2019/03/13/why-i-rewrote-the-mesh-g...

[2] http://way-cooler.org/blog/2019/04/29/rewriting-way-cooler-i...