Bug 1817024 - Vendor libwebrtc from df0a6228e5

Upstream commit: https://webrtc.googlesource.com/src/+/df0a6228e5c74788ad6e3217ebe6a825ecb158f7
    transport controller: move ice transport initialization

    out of the DTLS transport creation and into the ICE transport
    creation.

    BUG=None

    Change-Id: I9f1a74bbabde842234e5ae7cc64aa9632ab2ba78
    Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/281480
    Reviewed-by: Harald Alvestrand <hta@webrtc.org>
    Reviewed-by: Florent Castelli <orphis@webrtc.org>
    Commit-Queue: Philipp Hancke <phancke@microsoft.com>
    Cr-Commit-Position: refs/heads/main@{#38541}

third_party/libwebrtc/README.moz-ff-commit

@@ -19215,3 +19215,6 @@ adbcbf73fa
 # MOZ_LIBWEBRTC_SRC=/home/pehrsons/dev/moz-libwebrtc MOZ_LIBWEBRTC_BRANCH=mozpatches bash dom/media/webrtc/third_party_build/fast-forward-libwebrtc.sh
 # base of lastest vendoring
 bdf2567097
+# MOZ_LIBWEBRTC_SRC=/home/pehrsons/dev/moz-libwebrtc MOZ_LIBWEBRTC_BRANCH=mozpatches bash dom/media/webrtc/third_party_build/fast-forward-libwebrtc.sh
+# base of lastest vendoring
+df0a6228e5

third_party/libwebrtc/README.mozilla

@@ -12832,3 +12832,5 @@ libwebrtc updated from /home/pehrsons/dev/moz-libwebrtc commit mozpatches on 202
 libwebrtc updated from /home/pehrsons/dev/moz-libwebrtc commit mozpatches on 2023-02-24T11:20:03.389667.
 # ./mach python dom/media/webrtc/third_party_build/vendor-libwebrtc.py --from-local /home/pehrsons/dev/moz-libwebrtc --commit mozpatches libwebrtc
 libwebrtc updated from /home/pehrsons/dev/moz-libwebrtc commit mozpatches on 2023-02-24T11:21:00.102603.
+# ./mach python dom/media/webrtc/third_party_build/vendor-libwebrtc.py --from-local /home/pehrsons/dev/moz-libwebrtc --commit mozpatches libwebrtc
+libwebrtc updated from /home/pehrsons/dev/moz-libwebrtc commit mozpatches on 2023-02-24T11:21:53.523723.

third_party/libwebrtc/pc/jsep_transport_controller.cc

@@ -399,8 +399,13 @@ JsepTransportController::CreateIceTransport(const std::string& transport_name,
   init.set_async_dns_resolver_factory(async_dns_resolver_factory_);
   init.set_event_log(config_.event_log);
   init.set_field_trials(config_.field_trials);
-  return config_.ice_transport_factory->CreateIceTransport(
+  auto transport = config_.ice_transport_factory->CreateIceTransport(
       transport_name, component, std::move(init));
+  RTC_DCHECK(transport);
+  transport->internal()->SetIceRole(ice_role_);
+  transport->internal()->SetIceTiebreaker(ice_tiebreaker_);
+  transport->internal()->SetIceConfig(ice_config_);
+  return transport;
 }
 
 std::unique_ptr<cricket::DtlsTransportInternal>
@@ -421,9 +426,8 @@ JsepTransportController::CreateDtlsTransport(
   }
 
   RTC_DCHECK(dtls);
-  dtls->ice_transport()->SetIceRole(ice_role_);
-  dtls->ice_transport()->SetIceTiebreaker(ice_tiebreaker_);
-  dtls->ice_transport()->SetIceConfig(ice_config_);
+  RTC_DCHECK_EQ(ice, dtls->ice_transport());
+
   if (certificate_) {
     bool set_cert_success = dtls->SetLocalCertificate(certificate_);
     RTC_DCHECK(set_cert_success);
@@ -1035,7 +1039,6 @@ RTCError JsepTransportController::MaybeCreateJsepTransport(
 
   rtc::scoped_refptr<webrtc::IceTransportInterface> ice =
       CreateIceTransport(content_info.name, /*rtcp=*/false);
-  RTC_DCHECK(ice);
 
   std::unique_ptr<cricket::DtlsTransportInternal> rtp_dtls_transport =
       CreateDtlsTransport(content_info, ice->internal());