Delete media transport integration.

MediaTransport is deprecated and the code is unused.

No-Try: True
Bug: webrtc:9719
Change-Id: I5b864c1e74bf04df16c15f51b8fac3d407331dcd
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/160620
Commit-Queue: Bjorn Mellem <mellem@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29923}
diff --git a/pc/peer_connection_interface_unittest.cc b/pc/peer_connection_interface_unittest.cc
index 5a01430..7f42b8c 100644
--- a/pc/peer_connection_interface_unittest.cc
+++ b/pc/peer_connection_interface_unittest.cc
@@ -1421,15 +1421,15 @@
 
   PeerConnectionInterface::RTCConfiguration config = pc_->GetConfiguration();
   config.type = PeerConnectionInterface::kRelay;
-  config.use_media_transport = true;
-  config.use_media_transport_for_data_channels = true;
+  config.use_datagram_transport = true;
+  config.use_datagram_transport_for_data_channels = true;
   EXPECT_TRUE(pc_->SetConfiguration(config).ok());
 
   PeerConnectionInterface::RTCConfiguration returned_config =
       pc_->GetConfiguration();
   EXPECT_EQ(PeerConnectionInterface::kRelay, returned_config.type);
-  EXPECT_TRUE(returned_config.use_media_transport);
-  EXPECT_TRUE(returned_config.use_media_transport_for_data_channels);
+  EXPECT_TRUE(returned_config.use_datagram_transport);
+  EXPECT_TRUE(returned_config.use_datagram_transport_for_data_channels);
 }
 
 TEST_P(PeerConnectionInterfaceTest, SetConfigurationFailsAfterClose) {