TSAN startup fix

TSAN startup fix

We were hitting a lock order inversion deadlock, due to one thread
holding the lock in field_trial.cc and trying to hold the lock in
field_trial_param_associator.cc and another doing the opposite. This
fixes that.

BUG=671282
Committed: https://crrev.com/7f262eb07e82a53a561800998a9b2f5418534bdf
Cr-Commit-Position: refs/heads/master@{#436987}

[lawrencewu, 2016-12-07 15:35:24]

Description was changed from

==========
tsan startup fix

BUG=671282
==========

to

==========
TSAN startup fix

We were hitting a lock order inversion deadlock, due to one thread
holding the lock in field_trial.cc and trying to hold the lock in
field_trial_param_associator.cc and another doing the opposite. This
fixes that.

BUG=671282
==========

[lawrencewu, 2016-12-07 15:35:24]

lawrencewu@chromium.org changed reviewers:
+ asvitkine@chromium.org

[Alexei Svitkine (slow), 2016-12-07 15:46:46]

lgtm

[lawrencewu, 2016-12-07 15:48:23]

The CQ bit was checked by lawrencewu@chromium.org

[commit-bot: I haz the power, 2016-12-07 15:48:43]

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, 2016-12-07 17:07:12]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481125703344900, "parent_rev":
"473f6922301746d1ff9b7598fd555a437dcc0b5b", "commit_rev":
"7b1941a1888cc2b767d530938b17256b6d61d2e4"}

[commit-bot: I haz the power, 2016-12-07 17:07:41]

Description was changed from

==========
TSAN startup fix

We were hitting a lock order inversion deadlock, due to one thread
holding the lock in field_trial.cc and trying to hold the lock in
field_trial_param_associator.cc and another doing the opposite. This
fixes that.

BUG=671282
==========

to

==========
TSAN startup fix

We were hitting a lock order inversion deadlock, due to one thread
holding the lock in field_trial.cc and trying to hold the lock in
field_trial_param_associator.cc and another doing the opposite. This
fixes that.

BUG=671282
==========

[commit-bot: I haz the power, 2016-12-07 17:07:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-07 17:11:45]

Description was changed from

==========
TSAN startup fix

We were hitting a lock order inversion deadlock, due to one thread
holding the lock in field_trial.cc and trying to hold the lock in
field_trial_param_associator.cc and another doing the opposite. This
fixes that.

BUG=671282
==========

to

==========
TSAN startup fix

We were hitting a lock order inversion deadlock, due to one thread
holding the lock in field_trial.cc and trying to hold the lock in
field_trial_param_associator.cc and another doing the opposite. This
fixes that.

BUG=671282

Committed: https://crrev.com/7f262eb07e82a53a561800998a9b2f5418534bdf
Cr-Commit-Position: refs/heads/master@{#436987}
==========

[commit-bot: I haz the power, 2016-12-07 17:11:45]

Patchset 1 (id:??) landed as
https://crrev.com/7f262eb07e82a53a561800998a9b2f5418534bdf
Cr-Commit-Position: refs/heads/master@{#436987}