Add gammaIsLinear() API to SkColorSpace

Add gammaIsLinear() API to SkColorSpace

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2319073002

Committed: https://skia.googlesource.com/skia/+/653212c37efaa6d3175882559634772528bb8ad2

[msarett, 2016-09-07 13:00:19]

Description was changed from

==========
Add gammaIsLinear() API to SkColorSpace

BUG=skia:
==========

to

==========
Add gammaIsLinear() API to SkColorSpace

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2319073002
==========

[msarett, 2016-09-07 13:01:37]

msarett@google.com changed reviewers:
+ reed@google.com

[msarett, 2016-09-07 13:01:38]

Broke this off from the bigger change.  Chrome needs it before I can delete
gammaNamed() - someone is checking if it's linear.

[msarett, 2016-09-07 13:01:53]

The CQ bit was checked by msarett@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-09-07 13:02:02]

Dry run: 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, 2016-09-07 13:29:52]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-09-07 13:29:52]

Dry run: This issue passed the CQ dry run.

[reed1, 2016-09-07 14:09:34]

lgtm

[msarett, 2016-09-07 14:10:31]

The CQ bit was checked by msarett@google.com

[commit-bot: I haz the power, 2016-09-07 14:10:36]

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, 2016-09-07 14:13:28]

Description was changed from

==========
Add gammaIsLinear() API to SkColorSpace

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2319073002
==========

to

==========
Add gammaIsLinear() API to SkColorSpace

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2319073002

Committed:
https://skia.googlesource.com/skia/+/653212c37efaa6d3175882559634772528bb8ad2
==========

[commit-bot: I haz the power, 2016-09-07 14:13:29]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/653212c37efaa6d3175882559634772528bb8ad2