Rooted.
Hints:
For user: just enumerate, enumerate and then enumerate some more. Because enumerating will also put you in the path to root.
For Root: It is easier than what you found online. Just look at a certain file you found. Understand how it works, and then using the gui/webapp will make much more sense.
Oh, in this case, in the battle between Mozilla and Google, the blue icon wins 
Happy to assist if needed.