It seems like Google's search for office space back in May has come to a swift conclusion, as Motorola Mobility announced today that it will be moving its headquarters away from Libertyville, IL and into the top four floors of Merchandise Mart in downtown Chicago. This puts Motorola just a few blocks away from Google's Chicago offices in the River North neighborhood. Google hasn't made many public interactions with Motorola Mobility since its acquisition, but now that the two are such close neighbors that may be set to change.