Blink RTC video encoder will need this simplified parser to replace
current full H.264 SPS parser, to reduce parsing cost for extracting
frame size from compressed H.264 bitstream.
Bug: b:309132190
Change-Id: I6863f10bd139766d47fe4bff89143c1a91a09287
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/332468
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Jianlin Qiu <jianlin.qiu@intel.com>
Cr-Commit-Position: refs/heads/main@{#41466}
7121680f38