This reverts commit 315b95ca11161bdea715d5316f92828edd41f0d5. Reason for revert: Breaks internal bots. Original change's description: > Enforce stream id uniqueness in RtpSender::set_stream_ids > > https://w3c.github.io/webrtc-pc/#dfn-create-an-rtcrtpsender > has a step saying > For each stream in streams, add stream.id to > [[AssociatedMediaStreamIds]] if it's not already there > > This applies to addTrack and setStreams and the set of streams in > addTransceiver. > > BUG=webrtc:14769 > > Change-Id: If6be813396a1987dfe49fd73f976f96c71459eaf > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/287864 > Commit-Queue: Philipp Hancke <phancke@microsoft.com> > Reviewed-by: Harald Alvestrand <hta@webrtc.org> > Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> > Cr-Commit-Position: refs/heads/main@{#38937} Bug: webrtc:14769 Change-Id: I6fd22ff0550c0894057fb1dc15f1b95819fa6df2 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/288744 Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org> Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com> Reviewed-by: Andrey Logvin <landrey@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38940}