tree 982eb398f86a11ce1b69231ad9c7555e463648c7
parent 2f2ee83a9c1ff05a94265b175e51c63fc424d554
author reed <reed@google.com> 1455123195 -0800
committer Commit bot <commit-bot@chromium.org> 1455123195 -0800

move compose-shader into base-class as factory

next steps:
1. this lands
2. update android to call the new factory
3. move SkComposeShader.h into private

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1686803003

Review URL: https://codereview.chromium.org/1686803003