tree d0f09a353f0ed4f60b0f40a276f67270f9904fe4
parent 64b0f5f95754c4d354d2e09cebf2a0c43d4cdd50
author bsalomon <bsalomon@google.com> 1453761205 -0800
committer Commit bot <commit-bot@chromium.org> 1453761205 -0800

Make A8 readbacks work from non-A8 surfaces

Expand testing of A8 readbacks.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1613903005

Review URL: https://codereview.chromium.org/1613903005