Re: The code is trivial
The code is utterly trivial, and obvious to anyone with any insight into what its doing.
Whether something is trivial or (non-obvious) would be relevant in a patent dispute. This is a copyright dispute, and the question is whether Google copy-pasta'd Java's code wholesale.
They did, thus it is an infringement of the copyright. QED.
Moreover, even if it were relevant, "trivial" is a contextual term. An if-loop is a trivial statement. Any given line of code can be deemed trivial in isolation. 11,000 lines of individually trivial statements that implement some complex piece of logic stops being trivial.
Google's claims of Fair Use are then a separate discussion down the line once it has been established that copying has taken place, which is why they do not belong in the upfront discussion.