tree 0f5805da515e57b0d78e39a43ccd353ade082e3b
parent 4674d957a7637da9d242ff1bdba73a078f99a171
author caryclark <caryclark@google.com> 1471444492 -0700
committer Commit bot <commit-bot@chromium.org> 1471444492 -0700

check for null bitmap

Recent Skia driver addition of 8 bit src / 8 bit dst workaround
needs to check for a nullptr bitmap.

R==dsinclair@chromium.org

Review-Url: https://codereview.chromium.org/2255763002