Update gm baselines to work when the bot is plugged into the big screen
(as opposed to headless, as it has been running for a while)

I forced LCD font smoothing on for the machine by running this command:
defaults -currentHost write -globalDomain AppleFontSmoothing -int 2

git-svn-id: http://skia.googlecode.com/svn/trunk@2518 2bbb7eff-a529-9590-31e7-b0007b416f81