gm: add --ignoreTests flag
BUG=skia:1600
R=scroggo@google.com

Review URL: https://codereview.chromium.org/23526065

git-svn-id: http://skia.googlecode.com/svn/trunk@11374 2bbb7eff-a529-9590-31e7-b0007b416f81
24 files changed