Revert of Fix SkTwoPointConicalGradient zero-radius handling

Revert of Fix SkTwoPointConicalGradient zero-radius handling (patchset #2 id:20001 of https://codereview.chromium.org/1756573002/ )

Reason for revert:
One layout test shows a regression: https://storage.googleapis.com/chromium-layout-test-archives/linux_blink_rel/83359/layout-test-results/fast/gradients/crash-on-zero-radius-diffs.html

Original issue's description:
> Fix SkTwoPointConicalGradient zero-radius handling
> 
> r == 0 is within valid gradient range, we shouldn't skip it.
> 
> BUG=skia:5023
> R=caryclark@google.com,reed@google.com
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1756573002
> 
> Committed: https://skia.googlesource.com/skia/+/9c0b02a557e9be663a0eb07519e1b6a61a6c3df2

TBR=caryclark@google.com,reed@google.com,fmalita@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:5023
Committed: https://skia.googlesource.com/skia/+/734949099166f7bc446a352ce3596dc009484f59

[fmalita_google_do_not_use, 2016-03-02 14:34:09]

Created Revert of Fix SkTwoPointConicalGradient zero-radius handling

[commit-bot: I haz the power, 2016-03-02 14:34:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1754113003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1754113003/1

[commit-bot: I haz the power, 2016-03-02 14:34:26]

Description was changed from

==========
Revert of Fix SkTwoPointConicalGradient zero-radius handling (patchset #2
id:20001 of https://codereview.chromium.org/1756573002/ )

Reason for revert:
One layout test shows a regression:
https://storage.googleapis.com/chromium-layout-test-archives/linux_blink_rel/...

Original issue's description:
> Fix SkTwoPointConicalGradient zero-radius handling
> 
> r == 0 is within valid gradient range, we shouldn't skip it.
> 
> BUG=skia:5023
> R=caryclark@google.com,reed@google.com
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> 
> Committed:
https://skia.googlesource.com/skia/+/9c0b02a557e9be663a0eb07519e1b6a61a6c3df2

TBR=caryclark@google.com,reed@google.com,fmalita@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:5023
==========

to

==========
Revert of Fix SkTwoPointConicalGradient zero-radius handling (patchset #2
id:20001 of https://codereview.chromium.org/1756573002/ )

Reason for revert:
One layout test shows a regression:
https://storage.googleapis.com/chromium-layout-test-archives/linux_blink_rel/...

Original issue's description:
> Fix SkTwoPointConicalGradient zero-radius handling
> 
> r == 0 is within valid gradient range, we shouldn't skip it.
> 
> BUG=skia:5023
> R=caryclark@google.com,reed@google.com
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> 
> Committed:
https://skia.googlesource.com/skia/+/9c0b02a557e9be663a0eb07519e1b6a61a6c3df2

TBR=caryclark@google.com,reed@google.com,fmalita@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:5023

Committed:
https://skia.googlesource.com/skia/+/734949099166f7bc446a352ce3596dc009484f59
==========

[commit-bot: I haz the power, 2016-03-02 14:34:27]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/734949099166f7bc446a352ce3596dc009484f59