gfe-relnote: In QUIC, add OnOneRttPacketAckowledged to TLS handshaker, and this is used to allow client mark handshake confirmed when handshake done frame is not supported. Not affecting prod, not protected.

PiperOrigin-RevId: 291363354
Change-Id: I2aa500244b1e443e17bc4585e983c666d5782afa
diff --git a/quic/core/quic_connection.h b/quic/core/quic_connection.h
index 7fc528f..b060f87 100644
--- a/quic/core/quic_connection.h
+++ b/quic/core/quic_connection.h
@@ -175,6 +175,9 @@
 
   // Called when a packet of encryption |level| has been successfully decrypted.
   virtual void OnPacketDecrypted(EncryptionLevel level) = 0;
+
+  // Called when a 1RTT packet has been acknowledged.
+  virtual void OnOneRttPacketAcknowledged() = 0;
 };
 
 // Interface which gets callbacks from the QuicConnection at interesting