Check for GpuChannelHost nullity in GetGpuDriverBugWorkarounds

Check for GpuChannelHost nullity in GetGpuDriverBugWorkarounds

BUG=627392
R=kbr@chromium.org

Committed: https://crrev.com/9c74d43d235e97058f6327ffa292098b64f07036
Cr-Commit-Position: refs/heads/master@{#405282}

[Julien Isorce Samsung, 2016-07-13 08:20:28]

The CQ bit was checked by j.isorce@samsung.com to run a CQ dry run

[commit-bot: I haz the power, 2016-07-13 08:21:10]

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, 2016-07-13 09:24:59]

The CQ bit was unchecked by commit-bot@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-07-13 09:25:00]

Dry run: This issue passed the CQ dry run.

[Julien Isorce Samsung, 2016-07-13 15:13:21]

On 2016/07/13 09:25:00, commit-bot: I haz the power wrote:
> Dry run: This issue passed the CQ dry run.

Hi Ken, please have a look. Thx.

[Ken Russell (switch to Gerrit), 2016-07-13 20:11:25]

Thanks for the patch. This LGTM though I have some doubts about whether the
stack trace is accurate. OK to land as is though.

[Julien Isorce Samsung, 2016-07-13 20:30:05]

The CQ bit was checked by j.isorce@samsung.com

[commit-bot: I haz the power, 2016-07-13 20:31:10]

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, 2016-07-13 20:41:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-13 20:41:31]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-13 20:43:12]

Description was changed from

==========
Check for GpuChannelHost nullity in GetGpuDriverBugWorkarounds

BUG=627392

R=kbr@chromium.org
==========

to

==========
Check for GpuChannelHost nullity in GetGpuDriverBugWorkarounds

BUG=627392

R=kbr@chromium.org

Committed: https://crrev.com/9c74d43d235e97058f6327ffa292098b64f07036
Cr-Commit-Position: refs/heads/master@{#405282}
==========

[commit-bot: I haz the power, 2016-07-13 20:43:13]

Patchset 1 (id:??) landed as
https://crrev.com/9c74d43d235e97058f6327ffa292098b64f07036
Cr-Commit-Position: refs/heads/master@{#405282}