Revert of Attach GrOptDrawState into shader building pipeline (patchset #11 id:220001 of https://codereview.chromium.org/504203004/)

Reason for revert:
Failing some msaa gm's

Original issue's description:
> Attach GrOptDrawState into shader building pipeline
>
> The OptDrawState is now used for creating the actual gl shader. Current
> optimizations dones in GrOptDrawState include:
> All blend optimizations
> Constant color/coverage stage optimizations
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/ee6206572b42fec11f83ad0c1e6d435903640518

R=bsalomon@google.com, joshualitt@google.com
TBR=bsalomon@google.com, joshualitt@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: egdaniel@google.com

Review URL: https://codereview.chromium.org/560443004
13 files changed