Add option to gm: write out images into a hierarchy, rather than a flat set of files
BUG=https://code.google.com/p/skia/issues/detail?id=743
Review URL: https://codereview.appspot.com/6810047

git-svn-id: http://skia.googlecode.com/svn/trunk@6167 2bbb7eff-a529-9590-31e7-b0007b416f81
6 files changed