gfe-relnote: In QUIC, actually remove encrypters when discarding old encryption keys with TLS handshake. Protected by blocked gfe2_reloadable_flag_quic_enable_version_t* flags.

PiperOrigin-RevId: 294442019
Change-Id: I1513cece5c74341ddbfb7b0debe01b6aad480a2f
diff --git a/quic/core/quic_connection.h b/quic/core/quic_connection.h
index 12fa4e4..a3c7b8d 100644
--- a/quic/core/quic_connection.h
+++ b/quic/core/quic_connection.h
@@ -671,6 +671,9 @@
   void SetEncrypter(EncryptionLevel level,
                     std::unique_ptr<QuicEncrypter> encrypter);
 
+  // Called to remove encrypter of encryption |level|.
+  void RemoveEncrypter(EncryptionLevel level);
+
   // SetNonceForPublicHeader sets the nonce that will be transmitted in the
   // header of each packet encrypted at the initial encryption level decrypted.
   // This should only be called on the server side.