Niels Möller f00ca1a2b8 Make the output_period_ms argument to StartRtcEventLog optional
Intended to ease transition to new log format.

Bug: webrtc:6463, webrtc:8111
Change-Id: Icadaedb6a6a7d31038a45ff5eb0b054528f00f2f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/135944
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27920}
2019-05-13 07:58:39 +00:00
..
2019-01-28 11:17:00 +00:00