Harald Alvestrand 00f11224fd Remove extra usage of video-content-type header extension
This extension is documented to carry one bit: Screenshare.
It's been used for carrying simulcast layers and experiment IDs.
This CL removes that usage.

Bug: webrtc:15383
Change-Id: I048b283cde59bf1f607d8abdd53ced07a7add6f8
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/312420
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40457}
2023-07-22 21:47:08 +00:00
..
2023-06-02 17:40:26 +00:00
2022-09-30 13:50:49 +00:00
2023-04-24 10:45:15 +00:00
2022-09-30 08:44:30 +00:00
2023-05-03 12:56:39 +00:00