It's a reference to a very old (and since removed, at least in my version) Chrome Easter egg where Chrome Task Manager had a hidden column called "Goats Teleported".
Actually both are references to a very old game (Castlevania), which contained the mythical Goat Teleporter. It became a sort of internal Google meme/in-joke used whenever you needed some arbitrary object in an example. Goat teleporters show up in a few places in Google-external material, not just Chrome and Android. I recall them being occasionally mentioned when I worked there too, though it's been many years and I forget exactly how it got started.
See https://bugs.chromium.org/p/chromium/issues/detail?id=31482