[7e]

Most likely Chromium needs to build on a system which doesn’t support Java. Like ChromeOS. That excludes Bazel, at least unless cross-compilation is supported (likely a monstrous headache for ChromeOS). It’s a good reason to rewrite Bazel in Rust.

[dijit]

ChromeOS is Gentoo based.

It doesn't have any compiler in the distribution itself

[7e]

I’ll wager if you try to emerge a JVM on ChromeOS, especially on ARM32, it will fail. Gentoo is… not great.