Revert of Make all blending up to GrOptDrawState be handled by the xp/xp factory.

Revert of Make all blending up to GrOptDrawState be handled by the xp/xp factory. (patchset #7 id:140001 of https://codereview.chromium.org/759713002/)

Reason for revert:
break many gm's

Original issue's description:
> Make all blending up to GrOptDrawState be handled by the xp/xp factory.
> 
> In this cl the blending information is extracted for the xp and stored in the ODS
> which is then used as it currently is. In the follow up cl, an XP backend will be added
> and at that point all blending work will take place inside XP's.
> 
> BUG=skia:
> 
> Committed: https://skia.googlesource.com/skia/+/7c66342a399b529634bed0fabfaa562db2c0dbd4

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

Committed: https://skia.googlesource.com/skia/+/8d95ffa497091d0c9c7cda099684c7bca6714a17

[egdaniel, 2014-12-08 21:25:26]

Created Revert of Make all blending up to GrOptDrawState be handled by the xp/xp
factory.

[commit-bot: I haz the power, 2014-12-08 21:26:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/766653008/1

[commit-bot: I haz the power, 2014-12-08 21:26:48]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/8d95ffa497091d0c9c7cda099684c7bca6714a17