rebaselines

TBR=
BUG=skia:

Review URL: https://codereview.chromium.org/682123003
one more test updated

TBR=
BUG=skia:

Review URL: https://codereview.chromium.org/681373003
OptState owns program descriptor

BUG=skia:

Review URL: https://codereview.chromium.org/674543004