tree afd50b4adccabef0ae0d3882f2c4c726c1dd5dee
parent 26bf90e5d63024585a8261b224ea4387079e2751
author reed <reed@google.com> 1426856468 -0700
committer Commit bot <commit-bot@chromium.org> 1426856468 -0700

use Sk2s for EvalQuadTangent and ChopQuadAt

cloned from https://codereview.chromium.org/1026633002/

BUG=skia:

Review URL: https://codereview.chromium.org/1024873003