QUIC: support diversified keys with version 33.

net/quic/quic_connection.h

Index: net/quic/quic_connection.h
diff --git a/net/quic/quic_connection.h b/net/quic/quic_connection.h
index 443aaa444565d27e787a44800f78dfb984d515d8..980f87fc0c4f0171b04bbf48cf6c46f1d52f61ca 100644
--- a/net/quic/quic_connection.h
+++ b/net/quic/quic_connection.h
@@ -548,6 +548,11 @@ class NET_EXPORT_PRIVATE QuicConnection
   // takes ownership of |encrypter|.
   void SetEncrypter(EncryptionLevel level, QuicEncrypter* encrypter);
 
+  // SetNonceForPublicHeader sets the nonce that will be transmitted in the
+  // public header of each packet encrypted at the initial encryption level
+  // decrypted. This should only be called on the server side.
+  void SetDiversificationNonce(const DiversificationNonce nonce);
+
   // SetDefaultEncryptionLevel sets the encryption level that will be applied
   // to new packets.
   void SetDefaultEncryptionLevel(EncryptionLevel level);