When it comes to adland, you could say that Google's gone from a frenemy to fawner. The search giant has been pouring loads of resources into paying attention to Madison Avenue, and increasingly its focus has turned to creative agencies. In recent times it has: built out a robust agency-relations team helmed by former agency leader Torrence Boone; formed a creative council comprised of heavy-hitters from adland; crowded the annual Cannes International Festival of Creativity with execs; and held regular "Creative Sandbox" events that (over lots of free food, cocktails and even yoga sessions) focus on the junction between creativity and technology. Then there was "Project ReBrief," a documentary that reimagined iconic…