Add some untracked directories to gitignore. (Landing https://codereview.appspot.com/6488100/ for tfarina)
Add some untracked directories to gitignore.
(Landing https://codereview.appspot.com/6488100/ for tfarina)



git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@5507 2bbb7eff-a529-9590-31e7-b0007b416f81

metajack/skia,metajack/skia,Cue/skia,Cue/skia,metajack/skia,Cue/skia,mrobinson/skia,metajack/skia,Cue/skia,mrobinson/skia,mrobinson/skia,mrobinson/skia,mrobinson/skia