Roll WebRTC from 529707576af3 to 479e06649525 (4 revisions)

https://webrtc.googlesource.com/src.git/+log/529707576af3..479e06649525

2024-06-27 eshr@google.com Fix spatial layers to 1 when doing VP9 simulcast encoding
2024-06-27 ilnik@webrtc.org Rewrite simulcast config to equivalent SVC for vp9 simulcast
2024-06-27 asapersson@webrtc.org Prefer encoding min bitrate if configured when applying bitrate limits.
2024-06-27 jleconte@google.com Roll chromium_revision 536609c347..ba1ae79f58 (1316213:1319128)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/webrtc-chromium-autoroll
Please CC webrtc-chromium-sheriffs-robots@google.com,webrtc-infra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in WebRTC: https://bugs.chromium.org/p/webrtc/issues/entry
To file a bug in Chromium: https://bugs.chromium.org/p/chromium/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: None
Tbr: webrtc-chromium-sheriffs-robots@google.com
Change-Id: Ia6b0724a60e8f47fa111fe2159201cfe46219f78
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5664154
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1320535}