To some residents of Southern California, the golf course is a detested symbol of social privilege and water profligacy — a lush playground for the wealthy that can drink more than 100 million gallons a year, even as neighboring lawns shrivel and brown. … Although the golf industry has long weathered the resentment of nongolfers, owners and managers of links are finding themselves targeted by state water officials who say California is not doing enough to conserve water in a time of severe drought. Now, golf courses are being told to reduce water use under new drought restrictions in parts of Southern California, and managers of courses say they’re preparing to dial back their sprinklers and let some green grassy areas turn brown.