RTCStatsReport::AddStats DCHECKs that the ID is unique.
Previously it was allowed to call AddStats with stats of the same ID
multiple times.
This revealed a few things:
- Local and remote streams can have the same label.
RTCMediaStreamStats's ID is updated to include "local"/"remote".
- The same certificate can show up multiple times (e.g. for local and
remote in a loopback), so we skip creating RTCCertificateStats for the
same certificate multiple times
BUG=chromium:627816
Review-Url: https://codereview.webrtc.org/2593503003
Cr-Original-Commit-Position: refs/heads/master@{#15730}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 02d2a92d92d05c3014d779efd5c03e0822b7dbe7
4 files changed
