Fix a bug that causes a DCHECK to sometimes get it for no good reason.

Fix a bug that causes a DCHECK to sometimes get hit for no good reason.

BUG=584574
Committed: https://crrev.com/0beb0eb64f739808a55933776facf5ea68d2bfbf
Cr-Commit-Position: refs/heads/master@{#418740}

[michaeln, 2016-09-12 21:09:01]

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

[commit-bot: I haz the power, 2016-09-12 21:09:37]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[michaeln, 2016-09-12 21:27:20]

Description was changed from

==========
Get fix a bug that causes a DCHECK to sometimes get it for no good reason.

BUG=584574
==========

to

==========
Fix a bug that causes a DCHECK to sometimes get hit for no good reason.

BUG=584574
==========

[michaeln, 2016-09-12 21:28:55]

michaeln@chromium.org changed reviewers:
+ cmumford@chromium.org

[michaeln, 2016-09-12 21:28:56]

ptal

[commit-bot: I haz the power, 2016-09-12 22:07:24]

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

[commit-bot: I haz the power, 2016-09-12 22:07:25]

Dry run: This issue passed the CQ dry run.

[michaeln, 2016-09-14 20:25:44]

friendly ping

[cmumford, 2016-09-14 20:34:27]

lgtm

[michaeln, 2016-09-14 20:40:48]

The CQ bit was checked by michaeln@chromium.org

[commit-bot: I haz the power, 2016-09-14 20:41:44]

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, 2016-09-14 21:30:28]

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

[commit-bot: I haz the power, 2016-09-14 21:30:30]

Try jobs failed on following builders:
  win_chromium_x64_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[michaeln, 2016-09-15 00:31:49]

The CQ bit was checked by michaeln@chromium.org

[commit-bot: I haz the power, 2016-09-15 00:33:38]

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, 2016-09-15 01:14:45]

Description was changed from

==========
Fix a bug that causes a DCHECK to sometimes get hit for no good reason.

BUG=584574
==========

to

==========
Fix a bug that causes a DCHECK to sometimes get hit for no good reason.

BUG=584574
==========

[commit-bot: I haz the power, 2016-09-15 01:14:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-15 01:18:11]

Description was changed from

==========
Fix a bug that causes a DCHECK to sometimes get hit for no good reason.

BUG=584574
==========

to

==========
Fix a bug that causes a DCHECK to sometimes get hit for no good reason.

BUG=584574

Committed: https://crrev.com/0beb0eb64f739808a55933776facf5ea68d2bfbf
Cr-Commit-Position: refs/heads/master@{#418740}
==========

[commit-bot: I haz the power, 2016-09-15 01:18:12]

Patchset 1 (id:??) landed as
https://crrev.com/0beb0eb64f739808a55933776facf5ea68d2bfbf
Cr-Commit-Position: refs/heads/master@{#418740}