Fix null context GenBuffers

Fix null context GenBuffers

Fixes the null context to not return 0 for GenBuffers.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1863923003

Committed: https://skia.googlesource.com/skia/+/a957b8a114bb003d0975a5d5737c30b00e5940ab

[Chris Dalton, 2016-04-06 19:57:45]

Description was changed from

==========
Fix null context GenBuffers

Fixes the null context to not return 0 for GenBuffers.

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

to

==========
Fix null context GenBuffers

Fixes the null context to not return 0 for GenBuffers.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[Chris Dalton, 2016-04-06 19:59:22]

cdalton@nvidia.com changed reviewers:
+ bsalomon@google.com

[Chris Dalton, 2016-04-06 19:59:23]

This fixes the crash seen on the buffer change.

[Chris Dalton, 2016-04-06 19:59:31]

The CQ bit was checked by cdalton@nvidia.com to run a CQ dry run

[commit-bot: I haz the power, 2016-04-06 19:59:35]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1863923003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1863923003/1

[commit-bot: I haz the power, 2016-04-06 19:59:37]

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 2016-04-07 01:59 UTC

[bsalomon, 2016-04-06 20:33:38]

On 2016/04/06 19:59:37, commit-bot: I haz the power wrote:
> 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 2016-04-07 01:59 UTC

lgtm

[Chris Dalton, 2016-04-06 20:35:31]

The CQ bit was unchecked by cdalton@nvidia.com

[Chris Dalton, 2016-04-06 20:35:35]

The CQ bit was checked by cdalton@nvidia.com

[commit-bot: I haz the power, 2016-04-06 20:35:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1863923003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1863923003/1

[commit-bot: I haz the power, 2016-04-06 20:36:40]

Description was changed from

==========
Fix null context GenBuffers

Fixes the null context to not return 0 for GenBuffers.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Fix null context GenBuffers

Fixes the null context to not return 0 for GenBuffers.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...

Committed:
https://skia.googlesource.com/skia/+/a957b8a114bb003d0975a5d5737c30b00e5940ab
==========

[commit-bot: I haz the power, 2016-04-06 20:36:41]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/a957b8a114bb003d0975a5d5737c30b00e5940ab