Add --csv parameter to skpdiff to dump all scores in a csv file. We can run it with all skps, and have scores available to look at worst offenders progarmatically.

R=djsollen@google.com, zachr@google.com

Review URL: https://codereview.chromium.org/19826002

git-svn-id: http://skia.googlecode.com/svn/trunk@10234 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed