SAN FRANCISCO (AP) — Google is pouring $1 billion into easing the high-priced housing headaches that it and its Silicon Valley peers helped give the San Francisco Bay Area. The pledge announced Tuesday by Google CEO Sundar Pichai consists of a $250 million investment fund and $750 million of company-owned land. It will be used to build at least 15,000 homes that will include low- and mid-income housing.