GN: release -> -O3, to match GYP

GN: release -> -O3, to match GYP

-O3 does trigger some important compiler optimizations that -Os does not,
like autovectorization.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2288813002

Committed: https://skia.googlesource.com/skia/+/7957872f39f988d19793276680ae663da2d563fe

[mtklein_C, 2016-08-29 16:48:32]

Description was changed from

==========
GN: release -> -O3, to match GYP

-O3 does trigger some important compiler optimizations that -Os does not,
like autovectorization.

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

to

==========
GN: release -> -O3, to match GYP

-O3 does trigger some important compiler optimizations that -Os does not,
like autovectorization.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2288813002
==========

[mtklein_C, 2016-08-29 16:49:24]

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

[mtklein_C, 2016-08-29 16:49:24]

The CQ bit was checked by mtklein@chromium.org

[commit-bot: I haz the power, 2016-08-29 16:49:29]

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, 2016-08-29 16:49:31]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2016-08-29 22:49 UTC

[jcgregorio, 2016-08-29 16:52:55]

lgtm

[commit-bot: I haz the power, 2016-08-29 17:23:18]

Description was changed from

==========
GN: release -> -O3, to match GYP

-O3 does trigger some important compiler optimizations that -Os does not,
like autovectorization.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2288813002
==========

to

==========
GN: release -> -O3, to match GYP

-O3 does trigger some important compiler optimizations that -Os does not,
like autovectorization.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2288813002

Committed:
https://skia.googlesource.com/skia/+/7957872f39f988d19793276680ae663da2d563fe
==========

[commit-bot: I haz the power, 2016-08-29 17:24:04]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/7957872f39f988d19793276680ae663da2d563fe