This is done in case the new source has a different clock source which
might be out of sync with the previous one, leading to timestamp
conflicts.
Bug: b/340198307
Change-Id: Id1a82823ca85e03d99dad31b7ce9f19f09447755
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/350560
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42312}