I hate to tell you, but it will be none. They have these controversies all the time and it has never done a thing for stock price. The capitalization of their stock means average buyers, even massing together, couldn't impact it. Too many institutions own millions of shares and they look at one thing only, bottom line performance. Google, no matter how much we hate them, is going up in the near term. (not saying there won't be ups and downs, happens with all stocks, but nothing that will send a message).
I other words Google stock holders and the board of directors don’t give a damn that some might be offended.
Don’t give a damn since they are worth more than a quarter trillion dollars and all the complaining on internet forums will have not negative impact of the stock price.