"Did you ask Levandowski to bring Google information to Uber?"
"In any job interview the company recruiter is interested in what advantage in skills, knowledge, background etc the applicant will bring to the company?"
Yes. Or at least should be. In this case Kalanick could have just hire him immediately without HR intervention.
Uber cannot ask Levandowski to bring "Google information" since that sounds very much like intellectual property theft. Whatever Levandowski has in his head is fine, but he still cannot bring anything copied from Google, nor can he obviously use anything that Google has patented.