diff --git a/quic/core/quic_crypto_stream.cc b/quic/core/quic_crypto_stream.cc
index ba5219a..bf0106c 100644
--- a/quic/core/quic_crypto_stream.cc
+++ b/quic/core/quic_crypto_stream.cc
@@ -182,9 +182,6 @@
   return GetQuicFlag(FLAGS_quic_max_buffered_crypto_bytes);
 }
 
-void QuicCryptoStream::OnSuccessfulVersionNegotiation(
-    const ParsedQuicVersion& /*version*/) {}
-
 bool QuicCryptoStream::OnCryptoFrameAcked(const QuicCryptoFrame& frame,
                                           QuicTime::Delta /*ack_delay_time*/) {
   QuicByteCount newly_acked_length = 0;
diff --git a/quic/core/quic_crypto_stream.h b/quic/core/quic_crypto_stream.h
index 17474a8..ecd3201 100644
--- a/quic/core/quic_crypto_stream.h
+++ b/quic/core/quic_crypto_stream.h
@@ -98,10 +98,6 @@
   // encryption level |level|.
   virtual size_t BufferSizeLimitForLevel(EncryptionLevel level) const;
 
-  // Called when the underlying QuicConnection has agreed upon a QUIC version to
-  // use.
-  virtual void OnSuccessfulVersionNegotiation(const ParsedQuicVersion& version);
-
   // Called to cancel retransmission of unencrypted crypto stream data.
   void NeuterUnencryptedStreamData();
 
diff --git a/quic/core/quic_session.cc b/quic/core/quic_session.cc
index 073758e..c7890d7 100644
--- a/quic/core/quic_session.cc
+++ b/quic/core/quic_session.cc
@@ -484,9 +484,7 @@
 }
 
 void QuicSession::OnSuccessfulVersionNegotiation(
-    const ParsedQuicVersion& version) {
-  GetMutableCryptoStream()->OnSuccessfulVersionNegotiation(version);
-}
+    const ParsedQuicVersion& /*version*/) {}
 
 void QuicSession::OnPacketReceived(const QuicSocketAddress& /*self_address*/,
                                    const QuicSocketAddress& peer_address,