Revert of Generate Signed Distance Field directly from vector path

Revert of Generate Signed Distance Field directly from vector path (patchset #13 id:240001 of https://codereview.chromium.org/1643143002/ )

Reason for revert:
This patch seems to be generating the assert:

GrDistanceFieldGenFromVector.cpp:748: fatal error: ""0 && \"Winding number should be zero at the end of a scan line.\"""

Original issue's description:
> Generate Signed Distance Field directly from vector path
> 
> Add SkGenerateDistanceFieldFromPath API to generate signed distance field directly from SkPath.
> Currently only support even odd fill type.
> 
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1643143002
> 
> Committed: https://skia.googlesource.com/skia/+/4de97a64e8829323a7070b623411d9f9ddb0cd0f

TBR=bsalomon@google.com,jvanverth@google.com,mtklein@google.com,wasim.abbas@arm.com,joel.liang@arm.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/2a7cf5f5090fb6489284547850d308b33086fad9

[robertphillips, 2016-03-02 13:36:14]

Created Revert of Generate Signed Distance Field directly from vector path

[commit-bot: I haz the power, 2016-03-02 13:36:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1757913002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1757913002/1

[commit-bot: I haz the power, 2016-03-02 13:36:33]

Description was changed from

==========
Revert of Generate Signed Distance Field directly from vector path (patchset #13
id:240001 of https://codereview.chromium.org/1643143002/ )

Reason for revert:
This patch seems to be generating the assert:

GrDistanceFieldGenFromVector.cpp:748: fatal error: ""0 && \"Winding number
should be zero at the end of a scan line.\"""

Original issue's description:
> Generate Signed Distance Field directly from vector path
> 
> Add SkGenerateDistanceFieldFromPath API to generate signed distance field
directly from SkPath.
> Currently only support even odd fill type.
> 
> BUG=skia:
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> 
> Committed:
https://skia.googlesource.com/skia/+/4de97a64e8829323a7070b623411d9f9ddb0cd0f

TBR=bsalomon@google.com,jvanverth@google.com,mtklein@google.com,wasim.abbas@a...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:
==========

to

==========
Revert of Generate Signed Distance Field directly from vector path (patchset #13
id:240001 of https://codereview.chromium.org/1643143002/ )

Reason for revert:
This patch seems to be generating the assert:

GrDistanceFieldGenFromVector.cpp:748: fatal error: ""0 && \"Winding number
should be zero at the end of a scan line.\"""

Original issue's description:
> Generate Signed Distance Field directly from vector path
> 
> Add SkGenerateDistanceFieldFromPath API to generate signed distance field
directly from SkPath.
> Currently only support even odd fill type.
> 
> BUG=skia:
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> 
> Committed:
https://skia.googlesource.com/skia/+/4de97a64e8829323a7070b623411d9f9ddb0cd0f

TBR=bsalomon@google.com,jvanverth@google.com,mtklein@google.com,wasim.abbas@a...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed:
https://skia.googlesource.com/skia/+/2a7cf5f5090fb6489284547850d308b33086fad9
==========

[commit-bot: I haz the power, 2016-03-02 13:36:34]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/2a7cf5f5090fb6489284547850d308b33086fad9