Revert of Remove GP from drawstate, revision of invariant output for GP (patchset #9 id:160001 of https://codereview.chromium.org/791743003/)

Reason for revert:
breaks mac

Original issue's description:
> Remove GP from drawstate, revision of invariant output for GP
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/c6bc58eded89b0c0a36b8e20e193c200f297a0da

TBR=bsalomon@google.com,egdaniel@google.com,joshualitt@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/794843002
51 files changed