copy gs_utils.py from skia repo into common repo

BUG=skia:2618
R=borenet@google.com

Review URL: https://codereview.chromium.org/385673002
3 files changed
tree: 22df0b951cdc1f30955a8e57d8e836c5c47c56f2
  1. py/
  2. third_party/
  3. .gitignore
  4. __init__.py
  5. codereview.settings
  6. DEPS
  7. PRESUBMIT.py
  8. README