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_framer.h b/quic/core/quic_framer.h
index 5914e5a..9863dc1 100644
--- a/quic/core/quic_framer.h
+++ b/quic/core/quic_framer.h
@@ -520,6 +520,9 @@
   void SetEncrypter(EncryptionLevel level,
                     std::unique_ptr<QuicEncrypter> encrypter);
 
+  // Called to remove encrypter of encryption |level|.
+  void RemoveEncrypter(EncryptionLevel level);
+
   // Sets the encrypter and decrypter for the ENCRYPTION_INITIAL level.
   void SetInitialObfuscators(QuicConnectionId connection_id);