Add pathops and capture stderr so we can get SkDebugf output.

BUG=skia:
R=mtklein@google.com

Author: jcgregorio@google.com

Review URL: https://codereview.chromium.org/252863002

git-svn-id: http://skia.googlecode.com/svn/trunk@14402 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed