GN: extract optional() as a template and use for giflib-dependent code

GN: extract optional() as a template and use for giflib-dependent code


BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2270833003

Committed: https://skia.googlesource.com/skia/+/457b42a6398020c3791f62f8c8637653e0d39bcc

[mtklein_C, 2016-08-23 19:42:15]

Description was changed from

==========
GN: extract optional() as a template and use for giflib-dependent code


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

to

==========
GN: extract optional() as a template and use for giflib-dependent code


BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2270833003
==========

[mtklein_C, 2016-08-23 19:43:39]

The CQ bit was checked by mtklein@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-23 19:43:41]

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, 2016-08-23 20:07:06]

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

[commit-bot: I haz the power, 2016-08-23 20:07:06]

Dry run: This issue passed the CQ dry run.

[mtklein_C, 2016-08-23 20:15:46]

mtklein@chromium.org changed reviewers:
+ jcgregorio@google.com

[mtklein_C, 2016-08-23 20:15:47]

More to come... should be quicker now that I've figured out how to make this
work as a template.

[jcgregorio, 2016-08-23 20:42:13]

lgtm

[mtklein_C, 2016-08-23 20:55:38]

The CQ bit was checked by mtklein@chromium.org

[commit-bot: I haz the power, 2016-08-23 20:55:44]

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, 2016-08-23 20:56:39]

Description was changed from

==========
GN: extract optional() as a template and use for giflib-dependent code


BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2270833003
==========

to

==========
GN: extract optional() as a template and use for giflib-dependent code


BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2270833003

Committed:
https://skia.googlesource.com/skia/+/457b42a6398020c3791f62f8c8637653e0d39bcc
==========

[commit-bot: I haz the power, 2016-08-23 20:56:40]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/457b42a6398020c3791f62f8c8637653e0d39bcc