In a significant shift from earlier commitments, google is now exploring the sale of middlefield park, a major development site in the east whisman area of mountain view. The 40-acre property had been slated to become a centerpiece of the city’s residential expansion plans, with a proposal that included 1,900 housing units, a 2.4-acre affordable housing dedication, and 1.3 million square feet of office space. Now, the tech company is reconsidering its role in the project and is seeking