DCHECK that we don't insert nullptr into event log.

DCHECK that we don't insert nullptr into event log.

BUG=None

Review-Url: https://codereview.webrtc.org/2874753003
Cr-Commit-Position: refs/heads/master@{#18100}
Committed: https://chromium.googlesource.com/external/webrtc/+/8a329652de719b5efab5421019ebdc343c57deba

[terelius, 2017-05-11 08:49:06]

terelius@webrtc.org changed reviewers:
+ philipel@webrtc.org

[philipel, 2017-05-11 11:29:50]

lgtm

[philipel, 2017-05-11 11:41:58]

lgtm

[terelius, 2017-05-11 12:01:42]

The CQ bit was checked by terelius@webrtc.org

[commit-bot: I haz the power, 2017-05-11 12:01:48]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-05-11 13:05:28]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1494504102336500,
"parent_rev": "2077f2f9fcea5c514619fa5c16994cd6e80b3595", "commit_rev":
"8a329652de719b5efab5421019ebdc343c57deba"}

[commit-bot: I haz the power, 2017-05-11 13:05:31]

Description was changed from

==========
DCHECK that we don't insert nullptr into event log.

BUG=None
==========

to

==========
DCHECK that we don't insert nullptr into event log.

BUG=None

Review-Url: https://codereview.webrtc.org/2874753003
Cr-Commit-Position: refs/heads/master@{#18100}
Committed:
https://chromium.googlesource.com/external/webrtc/+/8a329652de719b5efab542101...
==========

[commit-bot: I haz the power, 2017-05-11 13:05:32]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/external/webrtc/+/8a329652de719b5efab542101...