gfe-relnote: In QUIC, remove GetHandshakeState from SessionNotifierInterface and add GetHandshakeState to QuicConnectionVisitorInterface. Not used yet. Not protected.

PiperOrigin-RevId: 290951876
Change-Id: Ia83c8ee2bb8da7ba0b78f48c204401f554559a20
diff --git a/quic/core/quic_connection.h b/quic/core/quic_connection.h
index fb38d97..23910e5 100644
--- a/quic/core/quic_connection.h
+++ b/quic/core/quic_connection.h
@@ -163,6 +163,9 @@
   // change is allowed.
   virtual bool AllowSelfAddressChange() const = 0;
 
+  // Called to get current handshake state.
+  virtual HandshakeState GetHandshakeState() const = 0;
+
   // Called when an ACK is received with a larger |largest_acked| than
   // previously observed.
   virtual void OnForwardProgressConfirmed() = 0;