Use QuicSession::transport_version() instead of QuicConnection::transport_version() to make code cleaner.

gfe-relnote: code cleanup, not protected.
PiperOrigin-RevId: 267628510
Change-Id: I2b28c42ec2345870905e7e5d7e88721be86ad6e4
diff --git a/quic/core/quic_crypto_server_handshaker.h b/quic/core/quic_crypto_server_handshaker.h
index 4b7b3ba..b24e9e9 100644
--- a/quic/core/quic_crypto_server_handshaker.h
+++ b/quic/core/quic_crypto_server_handshaker.h
@@ -155,7 +155,7 @@
 
   // Returns the QuicTransportVersion of the connection.
   QuicTransportVersion transport_version() const {
-    return session_->connection()->transport_version();
+    return session_->transport_version();
   }
 
   QuicCryptoServerStream* stream_;