tree b3c7358359884c80967e8c0f21c9d329d198a987
parent ffb3f6817d2ec141fcb5e267a30ecb32010ed8f1
author egdaniel <egdaniel@google.com> 1431272718 -0700
committer Commit bot <commit-bot@chromium.org> 1431272718 -0700

Only discard for XP dstCopies if we have a coverage value.

TBR=bsalomon@google.com

BUG=skia:

Review URL: https://codereview.chromium.org/1125283005