tree 15314082e379437acef1acace3ae222cba6fb14f
parent a233620f9ce9d94272619ecf94962319faec693a
author herb <herb@google.com> 1465588887 -0700
committer Commit bot <commit-bot@chromium.org> 1465588887 -0700

Make SkBlitter hierarchy explicit about what needs to be implemented.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2053823002

Review-Url: https://codereview.chromium.org/2053823002