It depends on what we mean when we say "Chrome". When the chrome binary is built for ChromeOS, it includes a shell called "ash". It's got a window manager, virtual desks, app launcher, login screen and more. The fact that this all lives in a binary called "chrome" and uses a nontrivial amount of the flags that this post is about is in some ways a historical artifact. The source for it is here [1]. None of that stuff is included in a regular desktop (Windows, Mac, Linux) build of Chrome.

[1] https://source.chromium.org/chromium/chromium/src/+/main:ash