Make GrDrawState::AutoRestoreViewMatrix handle sampler matrices.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6618065

git-svn-id: http://skia.googlecode.com/svn/trunk@5853 2bbb7eff-a529-9590-31e7-b0007b416f81
4 files changed