gfe-relnote: In QUIC, rename handshake_confirmed in handshaker to one_rtt_keys_available to make it clearer and more informative. Renaming only, not protected.

Not rename it to handshake_complete, as in QUIC crypto server side, handshake complete is slightly different than one_rtt_keys_available.

PiperOrigin-RevId: 289682542
Change-Id: I87e1e4925f4916166afe2bac2a055a207de1025a
diff --git a/quic/core/quic_session.cc b/quic/core/quic_session.cc
index 2167613..11a3268 100644
--- a/quic/core/quic_session.cc
+++ b/quic/core/quic_session.cc
@@ -989,7 +989,7 @@
   if (GetCryptoStream() == nullptr) {
     return false;
   }
-  return GetCryptoStream()->handshake_confirmed();
+  return GetCryptoStream()->one_rtt_keys_available();
 }
 
 void QuicSession::OnConfigNegotiated() {