Bug 1888181 - Vendor libwebrtc from 45e49ef537

Upstream commit: https://webrtc.googlesource.com/src/+/45e49ef5371ed67ee3278244248133bf9783d65c
    [M123] Fix handling of rejected m-lines without transport description

    A fingerprint should not be required for m-lines which are rejected.

    BUG=chromium:326493639,webrtc:11066

    (cherry picked from commit 845d6bef52ec08dfd9c87d3eff5ae5c07c3fe55d)

    Change-Id: I7428c91a144ca46650e13d72868f160652a98339
    Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/340322
    Reviewed-by: Harald Alvestrand <hta@webrtc.org>
    Reviewed-by: Florent Castelli <orphis@webrtc.org>
    Commit-Queue: Philipp Hancke <phancke@microsoft.com>
    Cr-Original-Commit-Position: refs/heads/main@{#41794}
    Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/341023
    Cr-Commit-Position: refs/branch-heads/6312@{#2}
    Cr-Branched-From: 0355f455a48b141a8277442825ec776a74d66fb7-refs/heads/main@{#41763}

third_party/libwebrtc/README.moz-ff-commit

@@ -29040,3 +29040,6 @@ bde80e3c0e
 # MOZ_LIBWEBRTC_SRC=/Users/apehrson/Dev/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
 c026167f59
+# MOZ_LIBWEBRTC_SRC=/Users/apehrson/Dev/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
+45e49ef537

third_party/libwebrtc/README.mozilla

@@ -19384,3 +19384,5 @@ libwebrtc updated from /Users/apehrson/Dev/elm/.moz-fast-forward/moz-libwebrtc c
 libwebrtc updated from /Users/apehrson/Dev/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2024-04-04T12:11:16.117006.
 # ./mach python dom/media/webrtc/third_party_build/vendor-libwebrtc.py --from-local /Users/apehrson/Dev/elm/.moz-fast-forward/moz-libwebrtc --commit mozpatches libwebrtc
 libwebrtc updated from /Users/apehrson/Dev/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2024-04-04T12:12:29.071526.
+# ./mach python dom/media/webrtc/third_party_build/vendor-libwebrtc.py --from-local /Users/apehrson/Dev/elm/.moz-fast-forward/moz-libwebrtc --commit mozpatches libwebrtc
+libwebrtc updated from /Users/apehrson/Dev/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2024-04-04T12:13:47.742363.

third_party/libwebrtc/pc/media_session.cc

@@ -2174,12 +2174,12 @@ RTCError MediaSessionDescriptionFactory::AddRtpContentForAnswer(
   }
   // If this section is part of a bundle, bundle_transport is non-null.
   // Then require_transport_attributes is false - we can handle sections
-  // without the DTLS parameters. Otherwise, transport attributes MUST
-  // be present.
+  // without the DTLS parameters. For rejected m-lines it does not matter.
+  // Otherwise, transport attributes MUST be present.
   std::unique_ptr<TransportDescription> transport = CreateTransportAnswer(
       media_description_options.mid, offer_description,
       media_description_options.transport_options, current_description,
-      bundle_transport == nullptr, ice_credentials);
+      !offer_content->rejected && bundle_transport == nullptr, ice_credentials);
   if (!transport) {
     LOG_AND_RETURN_ERROR(
         RTCErrorType::INTERNAL_ERROR,
@@ -2272,7 +2272,7 @@ RTCError MediaSessionDescriptionFactory::AddDataContentForAnswer(
   std::unique_ptr<TransportDescription> data_transport = CreateTransportAnswer(
       media_description_options.mid, offer_description,
       media_description_options.transport_options, current_description,
-      bundle_transport != nullptr, ice_credentials);
+      !offer_content->rejected && bundle_transport == nullptr, ice_credentials);
   if (!data_transport) {
     LOG_AND_RETURN_ERROR(
         RTCErrorType::INTERNAL_ERROR,
@@ -2344,10 +2344,11 @@ RTCError MediaSessionDescriptionFactory::AddUnsupportedContentForAnswer(
     SessionDescription* answer,
     IceCredentialsIterator* ice_credentials) const {
   std::unique_ptr<TransportDescription> unsupported_transport =
-      CreateTransportAnswer(media_description_options.mid, offer_description,
-                            media_description_options.transport_options,
-                            current_description, bundle_transport != nullptr,
-                            ice_credentials);
+      CreateTransportAnswer(
+          media_description_options.mid, offer_description,
+          media_description_options.transport_options, current_description,
+          !offer_content->rejected && bundle_transport == nullptr,
+          ice_credentials);
   if (!unsupported_transport) {
     LOG_AND_RETURN_ERROR(
         RTCErrorType::INTERNAL_ERROR,