gfe-relnote: Implement sending the MAX_PUSH_ID frame when the client sets a non-zero maximum push id.

PiperOrigin-RevId: 263372703
Change-Id: If68ed7819648fdd7bd5ec968592d04f88467f5d2
diff --git a/quic/core/quic_session.h b/quic/core/quic_session.h
index 57ced3a..cbfff08 100644
--- a/quic/core/quic_session.h
+++ b/quic/core/quic_session.h
@@ -575,6 +575,8 @@
     return false;
   }
 
+  bool IsHandshakeConfirmed() { return is_handshake_confirmed_; }
+
  private:
   friend class test::QuicSessionPeer;