Fix GrGLInterface::validate() to check for GL_OES_sample_shading on ES contexts

Fix GrGLInterface::validate() to check for GL_OES_sample_shading on ES contexts
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2156343004

Committed: https://skia.googlesource.com/skia/+/23c4f1acbcbb72f5a5f380bedc3eed0c1c387a04

[bsalomon, 2016-07-18 21:10:10]

Description was changed from

==========
Fix GrGLInterface::validate() to check for GL_OES_sample_shading on ES contexts
==========

to

==========
Fix GrGLInterface::validate() to check for GL_OES_sample_shading on ES contexts
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2156343004
==========

[bsalomon, 2016-07-18 21:10:31]

bsalomon@google.com changed reviewers:
+ egdaniel@google.com

[robertphillips, 2016-07-18 21:56:42]

robertphillips@google.com changed reviewers:
+ robertphillips@google.com

[robertphillips, 2016-07-18 21:56:42]

lgtm

[bsalomon, 2016-07-19 13:07:54]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2016-07-19 13:07:59]

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, 2016-07-19 13:21:57]

Description was changed from

==========
Fix GrGLInterface::validate() to check for GL_OES_sample_shading on ES contexts
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2156343004
==========

to

==========
Fix GrGLInterface::validate() to check for GL_OES_sample_shading on ES contexts
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2156343004

Committed:
https://skia.googlesource.com/skia/+/23c4f1acbcbb72f5a5f380bedc3eed0c1c387a04
==========

[commit-bot: I haz the power, 2016-07-19 13:21:59]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/23c4f1acbcbb72f5a5f380bedc3eed0c1c387a04