Fix cpplint errors in web_ui_controller_factory.h
Fix cpplint errors in web_ui_controller_factory.h

tejaspathak/brightray,paulcbetts/brightray,brave/brightray,hokein/brightray,atom/brightray,deepak1556/brightray,lakshmi-srinivas/brightray,hokein/brightray,brave/brightray,atom/brightray,lakshmi-srinivas/brightray,deepak1556/brightray,tejaspathak/brightray,bbondy/brightray,bbondy/brightray,lakshmi-srinivas/brightray,paulcbetts/brightray