Revert of Generate Signed Distance Field directly from vector path

Revert of Generate Signed Distance Field directly from vector path (patchset #18 id:340001 of https://chromiumcodereview.appspot.com/1643143002/ )

Reason for revert:
Multiple assertion failures on multiple platforms:
../../../src/gpu/GrDistanceFieldGenFromVector.cpp:806: fatal error: "assert(((col != width - 1) || (windingNumber == 0)) && "Winding number should be zero at the end of a scan line.")"
https://luci-milo.appspot.com/swarming/task/31f5353caf8cc410
https://luci-milo.appspot.com/swarming/task/31f567789cbcec10

c:\b\work\skia\src\pathops\skopangle.cpp:165: fatal error: "assert(lrOpposite != trOpposite)"
https://luci-milo.appspot.com/swarming/task/31f570d74f750310



Original issue's description:
> Generate Signed Distance Field directly from vector path
> 
> Add SkGenerateDistanceFieldFromPath API to generate signed distance field directly from SkPath.
> 
> 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
> Committed: https://skia.googlesource.com/skia/+/e8f0a7b986f1e5583c9bc162efcdd92fd6430549

TBR=bsalomon@google.com,jvanverth@google.com,mtklein@google.com,wasim.abbas@arm.com,caryclark@google.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/+/620ee4f744cefbf2fef60add803816398522baae

[dogben, 2016-10-19 11:42:48]

The CQ bit was checked by benjaminwagner@google.com

[dogben, 2016-10-19 11:42:48]

Created Revert of Generate Signed Distance Field directly from vector path

[commit-bot: I haz the power, 2016-10-19 11:42:55]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-19 11:43:05]

Description was changed from

==========
Revert of Generate Signed Distance Field directly from vector path (patchset #18
id:340001 of https://chromiumcodereview.appspot.com/1643143002/ )

Reason for revert:
Multiple assertion failures on multiple platforms:
../../../src/gpu/GrDistanceFieldGenFromVector.cpp:806: fatal error:
"assert(((col != width - 1) || (windingNumber == 0)) && "Winding number should
be zero at the end of a scan line.")"
https://luci-milo.appspot.com/swarming/task/31f5353caf8cc410
https://luci-milo.appspot.com/swarming/task/31f567789cbcec10

c:\b\work\skia\src\pathops\skopangle.cpp:165: fatal error: "assert(lrOpposite !=
trOpposite)"
https://luci-milo.appspot.com/swarming/task/31f570d74f750310



Original issue's description:
> Generate Signed Distance Field directly from vector path
> 
> Add SkGenerateDistanceFieldFromPath API to generate signed distance field
directly from SkPath.
> 
> 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
> Committed:
https://skia.googlesource.com/skia/+/e8f0a7b986f1e5583c9bc162efcdd92fd6430549

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 #18
id:340001 of https://chromiumcodereview.appspot.com/1643143002/ )

Reason for revert:
Multiple assertion failures on multiple platforms:
../../../src/gpu/GrDistanceFieldGenFromVector.cpp:806: fatal error:
"assert(((col != width - 1) || (windingNumber == 0)) && "Winding number should
be zero at the end of a scan line.")"
https://luci-milo.appspot.com/swarming/task/31f5353caf8cc410
https://luci-milo.appspot.com/swarming/task/31f567789cbcec10

c:\b\work\skia\src\pathops\skopangle.cpp:165: fatal error: "assert(lrOpposite !=
trOpposite)"
https://luci-milo.appspot.com/swarming/task/31f570d74f750310



Original issue's description:
> Generate Signed Distance Field directly from vector path
> 
> Add SkGenerateDistanceFieldFromPath API to generate signed distance field
directly from SkPath.
> 
> 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
> Committed:
https://skia.googlesource.com/skia/+/e8f0a7b986f1e5583c9bc162efcdd92fd6430549

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/+/620ee4f744cefbf2fef60add803816398522baae
==========

[commit-bot: I haz the power, 2016-10-19 11:43:06]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/620ee4f744cefbf2fef60add803816398522baae