Fix SdpSemantics::kPlanB deprecated usage

Anything linking to //third_party/jsoncpp is hiding deprecated usage
warnings, so these were not discovered earlier.

Bug: chromium:983223
Change-Id: Ib527710b2688d691250d2b9f4894a9e6726d148f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/258123
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Auto-Submit: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36458}
diff --git a/pc/peer_connection_jsep_unittest.cc b/pc/peer_connection_jsep_unittest.cc
index ac355d5..3e18f7b 100644
--- a/pc/peer_connection_jsep_unittest.cc
+++ b/pc/peer_connection_jsep_unittest.cc
@@ -1640,7 +1640,7 @@
 // two video tracks.
 TEST_F(PeerConnectionJsepTest, TwoVideoPlanBToUnifiedPlanFails) {
   RTCConfiguration config_planb;
-  config_planb.sdp_semantics = SdpSemantics::kPlanB;
+  config_planb.sdp_semantics = SdpSemantics::kPlanB_DEPRECATED;
   auto caller = CreatePeerConnection(config_planb);
   auto callee = CreatePeerConnection();
   caller->AddVideoTrack("video1");
@@ -1656,7 +1656,7 @@
 TEST_F(PeerConnectionJsepTest, OneVideoUnifiedPlanToTwoVideoPlanBFails) {
   auto caller = CreatePeerConnection();
   RTCConfiguration config_planb;
-  config_planb.sdp_semantics = SdpSemantics::kPlanB;
+  config_planb.sdp_semantics = SdpSemantics::kPlanB_DEPRECATED;
   auto callee = CreatePeerConnection(config_planb);
   caller->AddVideoTrack("video");
   callee->AddVideoTrack("video1");
@@ -1809,7 +1809,7 @@
 
 TEST_F(PeerConnectionJsepTest, RollbackNotSupportedInPlanB) {
   RTCConfiguration config;
-  config.sdp_semantics = SdpSemantics::kPlanB;
+  config.sdp_semantics = SdpSemantics::kPlanB_DEPRECATED;
   config.enable_implicit_rollback = true;
   auto caller = CreatePeerConnection(config);
   auto callee = CreatePeerConnection(config);