Regardless of how people feel about antitrust laws, the hallmark of corruption is to selectively enforce laws in a way that harms your opponents and accommodates your allies. In this case, an administration that has been aggressive on antitrust enforcement when, for instance, spiking the AT&T and T-Mobile merger, took no enforceable action against Google even after finding wrongdoing.
Since 2008, there has been a steady flow of cash, personnel, and technology from Google's California headquarters to the White House. Google employees have given the President over $1.5 million in combined donations. In fact, they were his fourth-largest source of cash in 2008, and in third-largest in 2012.