tree c2d580f618d6619da5605e810a4d9fd4bec9a75e
parent a881ac0ec9e79874e6b2e97cac5f66ca24958076
author Harald Alvestrand <hta@webrtc.org> 1518562080 +0100
committer Commit Bot <commit-bot@chromium.org> 1518567500 +0000

Add UMA counters for type of SDP semantic in use.

We count a) what semantics are asked for explicitly (if any),
and b) what semantics are reflected in the successfully
processed answer, as indicated by presence of msid lines
of type Unified Plan vs Plan B.

This gives an indication of usage in sessions initiated by
the browser. It does not indicate usage in sessions where the
browser is the answerer.

Bug: chromium:811683
Change-Id: I2e28a6a83df1664e1aa1e17cd4ff2921de1fba7e
Reviewed-on: https://webrtc-review.googlesource.com/52101
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22008}