Allow customization of client address used to generate and validate source address token

net/quic/core/quic_crypto_server_stream.h

Index: net/quic/core/quic_crypto_server_stream.h
diff --git a/net/quic/core/quic_crypto_server_stream.h b/net/quic/core/quic_crypto_server_stream.h
index 4701be7a25a80bcd200bde897c892259e373059f..5907a322fa99229eb354cc1ede7d8c1234ef06f8 100644
--- a/net/quic/core/quic_crypto_server_stream.h
+++ b/net/quic/core/quic_crypto_server_stream.h
@@ -137,6 +137,9 @@ class QUIC_EXPORT_PRIVATE QuicCryptoServerStream
   // before going through the parameter negotiation step.
   virtual void OverrideQuicConfigDefaults(QuicConfig* config);
 
+  // Returns client address used to generate and validate source address token.
+  virtual const QuicSocketAddress GetClientAddress();
+
  private:
   friend class test::QuicCryptoServerStreamPeer;