add explicit purgeAll() so we don't get foiled by the min cache-limit
call unref instead of delete on the GrFontScaler
Review URL: https://codereview.appspot.com/6353045

git-svn-id: http://skia.googlecode.com/svn/trunk@4366 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed