tree 3b3ca3eb421a45b6aaf151c2e227cc1de4655a38
parent b2b416d3847c138a0a13876fdc1cdeae607b7e31
author egdaniel <egdaniel@google.com> 1421764491 -0800
committer Commit bot <commit-bot@chromium.org> 1421764491 -0800

Remove willReadDst from GrFragmentProcessor.

Since only XP's can read dst now, there is no reason to have this query on GrFP.
This also triggered a chain reaction of cleaning up/removing unnecessary code
elsewhere.

BUG=skia:

Review URL: https://codereview.chromium.org/851143003