[gavinsyancey]

I think that's part of the ChromeOS window manager. Note that the file you posted is in the "ash" namespace.

> Ash is the “Aura Shell”, the window manager and system UI for Chrome OS.

https://chromium.googlesource.com/chromium/src.git/+/refs/he...

I'd guess someone at Google decided to use tree-related codenames for ash components :)

[graypegg]

https://chromium.googlesource.com/chromium/src.git/+/lkgr/as...

    “Shelf party” was an Easter-egg feature that made shelf icons fly around the screen. It did not launch and was removed in June 2023.

Now I want to see if I can find a May 2023 build of chromium with a --enable-shelf-party flag.