Mayer arrived at Google back in 1999 with a master’s degree in computer science from Stanford. A math whiz with a photographic memory, she managed the launch of more than 100 features and products at Google, including Google News and Gmail. If you like Google’s clean, uncluttered look and feel, you can thank Mayer. One would expect someone with that kind of energy and ability to get tapped for a C level position, but about a year and a half ago, Google moved her to mapping and location services – away from search. Many saw this as a demotion. As the NY Times explains, the year after she bec…