gfe-relnote: In QUIC, add VersionHasIetfInvariantHeader and  VersionSupportsMessageFrames. No functional change expected. Not protected.

PiperOrigin-RevId: 250714233
Change-Id: I9f540d239b84285f83fe5774866ebd345ce09532
diff --git a/quic/core/quic_versions.h b/quic/core/quic_versions.h
index 0a368df..b33e084 100644
--- a/quic/core/quic_versions.h
+++ b/quic/core/quic_versions.h
@@ -336,6 +336,18 @@
                                          std::numeric_limits<size_t>::max());
 }
 
+// Returns true if |transport_version| uses IETF invariant headers.
+QUIC_EXPORT_PRIVATE inline bool VersionHasIetfInvariantHeader(
+    QuicTransportVersion transport_version) {
+  return transport_version > QUIC_VERSION_43;
+}
+
+// Returns true if |transport_version| supports MESSAGE frames.
+QUIC_EXPORT_PRIVATE inline bool VersionSupportsMessageFrames(
+    QuicTransportVersion transport_version) {
+  return transport_version > QUIC_VERSION_44;
+}
+
 // Returns true if QuicSpdyStream encodes body using HTTP/3 specification and
 // sends data frame header along with body.
 QUIC_EXPORT_PRIVATE inline bool VersionHasDataFrameHeader(