Add more debugging CHECKS to diagnose an Android renderer crash.

Add more debugging CHECKS to diagnose an Android renderer crash.

Suspicion is that CreateTrialsFromSeed() is being called more than
once, so add some CHECKs that will help diagnose it. If it's not
being called twice but the same field trial is being registered
twice, this can also cause the same issue - so catch that too.

BUG=359406
Committed: https://crrev.com/7aa1af9d657f11a11c7c31bb636b0235df096e68
Cr-Commit-Position: refs/heads/master@{#372252}

[Alexei Svitkine (slow), 2016-01-26 19:44:14]

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

[rkaplow, 2016-01-27 15:56:36]

lgtm

[Alexei Svitkine (slow), 2016-01-27 16:01:07]

Looks like some of our unit tests hit these CHECKs. Will investigate later this
week.

[Alexei Svitkine (slow), 2016-01-29 01:15:41]

The CQ bit was checked by asvitkine@chromium.org

[Alexei Svitkine (slow), 2016-01-29 01:15:42]

The patchset sent to the CQ was uploaded after l-g-t-m from rkaplow@chromium.org
Link to the patchset: https://codereview.chromium.org/1632913004/#ps20001
(title: "Update tests.")

[commit-bot: I haz the power, 2016-01-29 01:17:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1632913004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1632913004/20001

[commit-bot: I haz the power, 2016-01-29 02:05:52]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-01-29 02:06:42]

Description was changed from

==========
Add more debugging CHECKS to diagnose an Android renderer crash.

Suspicion is that CreateTrialsFromSeed() is being called more than
once, so add some CHECKs that will help diagnose it. If it's not
being called twice but the same field trial is being registered
twice, this can also cause the same issue - so catch that too.

BUG=359406
==========

to

==========
Add more debugging CHECKS to diagnose an Android renderer crash.

Suspicion is that CreateTrialsFromSeed() is being called more than
once, so add some CHECKs that will help diagnose it. If it's not
being called twice but the same field trial is being registered
twice, this can also cause the same issue - so catch that too.

BUG=359406

Committed: https://crrev.com/7aa1af9d657f11a11c7c31bb636b0235df096e68
Cr-Commit-Position: refs/heads/master@{#372252}
==========

[commit-bot: I haz the power, 2016-01-29 02:06:43]

Patchset 2 (id:??) landed as
https://crrev.com/7aa1af9d657f11a11c7c31bb636b0235df096e68
Cr-Commit-Position: refs/heads/master@{#372252}