Sk4fLinearGradient fuzzer fixes

Sk4fLinearGradient fuzzer fixes

1) update in_range() to actually follow the documented rules regarding interval
   open/close endpoints

2) detect cases where the intervals provide negligible advance and fall back
   to using a color average

BUG=skia:5647
R=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2472483002

Committed: https://skia.googlesource.com/skia/+/afac581523af9de5e0af0af1dc128cac1b846006

[f(malita), 2016-11-01 19:23:48]

Description was changed from

==========
Sk4fLinearGradient fuzer fixes

1)

2)

BUG=skia:5647
R=reed@google.com
==========

to

==========
Sk4fLinearGradient fuzer fixes

1)

2)

BUG=skia:5647
R=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2472483002
==========

[f(malita), 2016-11-01 19:27:02]

Description was changed from

==========
Sk4fLinearGradient fuzer fixes

1)

2)

BUG=skia:5647
R=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2472483002
==========

to

==========
Sk4fLinearGradient fuzer fixes

1) update in_range() to actually follow the documented rules regarding interval
   open/close endpoints

2) detect cases where the intervals provide negligible advance and fall back
   to using a color average

BUG=skia:5647
R=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2472483002
==========

[reed1, 2016-11-01 20:08:45]

lgtm

[f(malita), 2016-11-01 20:22:08]

The CQ bit was checked by fmalita@chromium.org

[f(malita), 2016-11-01 20:22:08]

The patchset sent to the CQ was uploaded after l-g-t-m from reed@google.com
Link to the patchset: https://codereview.chromium.org/2472483002/#ps40001
(title: "GM")

[commit-bot: I haz the power, 2016-11-01 20:22:15]

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

[f(malita), 2016-11-01 20:31:48]

Description was changed from

==========
Sk4fLinearGradient fuzer fixes

1) update in_range() to actually follow the documented rules regarding interval
   open/close endpoints

2) detect cases where the intervals provide negligible advance and fall back
   to using a color average

BUG=skia:5647
R=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2472483002
==========

to

==========
Sk4fLinearGradient fuzzer fixes

1) update in_range() to actually follow the documented rules regarding interval
   open/close endpoints

2) detect cases where the intervals provide negligible advance and fall back
   to using a color average

BUG=skia:5647
R=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2472483002
==========

[commit-bot: I haz the power, 2016-11-01 20:41:37]

Description was changed from

==========
Sk4fLinearGradient fuzzer fixes

1) update in_range() to actually follow the documented rules regarding interval
   open/close endpoints

2) detect cases where the intervals provide negligible advance and fall back
   to using a color average

BUG=skia:5647
R=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2472483002
==========

to

==========
Sk4fLinearGradient fuzzer fixes

1) update in_range() to actually follow the documented rules regarding interval
   open/close endpoints

2) detect cases where the intervals provide negligible advance and fall back
   to using a color average

BUG=skia:5647
R=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2472483002

Committed:
https://skia.googlesource.com/skia/+/afac581523af9de5e0af0af1dc128cac1b846006
==========

[commit-bot: I haz the power, 2016-11-01 20:41:38]

Committed patchset #3 (id:40001) as
https://skia.googlesource.com/skia/+/afac581523af9de5e0af0af1dc128cac1b846006