Bug 1903098 - Vendor libwebrtc from ffb49c22ca

Upstream commit: https://webrtc.googlesource.com/src/+/ffb49c22ca55129c0871e38e5f50e45657e5cba8
    Add Monorail -> Google Issue Tracker map.

    This CL also creates a docs/monorail-bog-tracker-migration where
    we can add more information (if needed) about the migration.

    No-Try: True
    Bug: None
    Change-Id: Ieec36a793daf8e30c6181f7cd595fce922948838
    Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/349323
    Reviewed-by: Harald Alvestrand <hta@webrtc.org>
    Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
    Cr-Commit-Position: refs/heads/main@{#42195}

third_party/libwebrtc/README.moz-ff-commit

@@ -30354,3 +30354,6 @@ c21a150b25
 # MOZ_LIBWEBRTC_SRC=/home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc MOZ_LIBWEBRTC_BRANCH=mozpatches bash dom/media/webrtc/third_party_build/fast-forward-libwebrtc.sh
 # base of lastest vendoring
 d78e30e00b
+# MOZ_LIBWEBRTC_SRC=/home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc MOZ_LIBWEBRTC_BRANCH=mozpatches bash dom/media/webrtc/third_party_build/fast-forward-libwebrtc.sh
+# base of lastest vendoring
+ffb49c22ca

third_party/libwebrtc/README.mozilla

@@ -20260,3 +20260,5 @@ libwebrtc updated from /home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc
 libwebrtc updated from /home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2024-06-18T22:52:15.780384.
 # ./mach python dom/media/webrtc/third_party_build/vendor-libwebrtc.py --from-local /home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc --commit mozpatches libwebrtc
 libwebrtc updated from /home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2024-06-18T22:53:19.190272.
+# ./mach python dom/media/webrtc/third_party_build/vendor-libwebrtc.py --from-local /home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc --commit mozpatches libwebrtc
+libwebrtc updated from /home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2024-06-18T22:54:12.305928.