gfe-relnote: In QUIC, add unused HANDSHAKE encryption level. No functional change expected, not protected.

PiperOrigin-RevId: 238661434
Change-Id: Ia1e1d2be2d6a46f3981afae6628877242fbabf24
diff --git a/quic/core/quic_packet_creator.cc b/quic/core/quic_packet_creator.cc
index ec7248d..3702635 100644
--- a/quic/core/quic_packet_creator.cc
+++ b/quic/core/quic_packet_creator.cc
@@ -30,6 +30,8 @@
   switch (level) {
     case ENCRYPTION_NONE:
       return INITIAL;
+    case ENCRYPTION_HANDSHAKE:
+      return HANDSHAKE;
     case ENCRYPTION_ZERO_RTT:
       return ZERO_RTT_PROTECTED;
     case ENCRYPTION_FORWARD_SECURE: