Revert of removing GrDrawEffect

Revert of removing GrDrawEffect (patchset #4 id:60001 of https://codereview.chromium.org/571163002/)

Reason for revert:
reverting to unblock another revert

Original issue's description:
> removing GrDrawEffect
> 
> BUG=skia:
> 
> Committed: https://skia.googlesource.com/skia/+/8ddbe8b9366c8c59c4fb55f01f253de8a0b37d6e

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

Committed: https://skia.googlesource.com/skia/+/08da4f22d790cfc51bbeb10b4b84dab49cf0eaec

[joshua.litt, 2014-09-16 14:13:46]

Created Revert of removing GrDrawEffect

[commit-bot: I haz the power, 2014-09-16 14:14:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/577593003/1

[commit-bot: I haz the power, 2014-09-16 14:14:48]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from a valid reviewer till 2014-09-16 20:14 UTC

[egdaniel, 2014-09-16 14:15:38]

egdaniel@google.com changed reviewers:
+ egdaniel@google.com

[egdaniel, 2014-09-16 14:15:39]

lgtm

[commit-bot: I haz the power, 2014-09-16 14:17:32]

Committed patchset #1 (id:1) as 08da4f22d790cfc51bbeb10b4b84dab49cf0eaec