Add gm/confirm_no_failures_in_json.py
The CompareGMs step will use this (instead of running skdiff over the image
files) to decide whether to go red or green.

R=rmistry@google.com

Review URL: https://codereview.chromium.org/15100003

git-svn-id: http://skia.googlecode.com/svn/trunk@9127 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed