Revert of Cleanup legacy NVPR-related definitions

Revert of Cleanup legacy NVPR-related definitions (patchset #4 id:60001 of https://codereview.chromium.org/1177243004/)

Reason for revert:
Breaks the Ubuntu *SAN bots.

Original issue's description:
> Cleanup legacy NVPR-related definitions
> 
> Fixed-function NVPR codepaths were removed a while ago. Only NVPR API
> version 1.3 (PathFragmentInputGen) was left working. Remove
> backwards-compatibility code that was left behind.
> 
> Remove some NVPR API function typedefs that were left from initial
> commits.
> 
> Remove PathCoords function pointer from GrGLInterface, it has
> never been called and causes problems in the future, since it will
> not be implemented in the Chromium pseudo extension.
> 
> Committed: https://skia.googlesource.com/skia/+/fb8d6884e0e01d0c2f8596adf5af1efb0d08de7e
> 
> Committed: https://skia.googlesource.com/skia/+/e35b5d99d8dfcc6b2be844df28cba47436380809

TBR=joshualitt@google.com,cdalton@nvidia.com,bsalomon@google.com,kkinnunen@nvidia.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://skia.googlesource.com/skia/+/439f23e563e2ef6a497f1894c8447921f1e1f7e2

[jvanverth1, 2015-06-30 16:40:16]

Created Revert of Cleanup legacy NVPR-related definitions

[commit-bot: I haz the power, 2015-06-30 16:40:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1219663005/1

[commit-bot: I haz the power, 2015-06-30 16:40:41]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/439f23e563e2ef6a497f1894c8447921f1e1f7e2