relnote: Create Quic version 28. The receiver refuses to create a

net/quic/quic_protocol.h

Index: net/quic/quic_protocol.h
diff --git a/net/quic/quic_protocol.h b/net/quic/quic_protocol.h
index 800b3496a62aa5023fe707b4322fd981d4780994..f4dfa0d602b542ce68015b3c6602862907d1e07a 100644
--- a/net/quic/quic_protocol.h
+++ b/net/quic/quic_protocol.h
@@ -345,6 +345,7 @@ enum QuicVersion {
                          // from QuicRstStreamFrame
   QUIC_VERSION_26 = 26,  // In CHLO, send XLCT tag containing hash of leaf cert
   QUIC_VERSION_27 = 27,  // Sends a nonce in the SHLO.
+  QUIC_VERSION_28 = 28,  // Receiver can refuse to create a requested stream.
 };
 
 // This vector contains QUIC versions which we currently support.
@@ -355,7 +356,8 @@ enum QuicVersion {
 // IMPORTANT: if you are adding to this list, follow the instructions at
 // http://sites/quic/adding-and-removing-versions
 static const QuicVersion kSupportedQuicVersions[] = {
-    QUIC_VERSION_27, QUIC_VERSION_26, QUIC_VERSION_25, QUIC_VERSION_24};
+    QUIC_VERSION_28, QUIC_VERSION_27, QUIC_VERSION_26, QUIC_VERSION_25,
+    QUIC_VERSION_24};
 
 typedef std::vector<QuicVersion> QuicVersionVector;
 
@@ -435,6 +437,10 @@ enum QuicRstStreamErrorCode {
   // Closing stream locally, sending a RST to allow for proper flow control
   // accounting. Sent in response to a RST from the peer.
   QUIC_RST_ACKNOWLEDGEMENT,
+  // Receiver refused to create the stream (because its limit on open streams
+  // has been reached).  The sender should retry the request later (using
+  // another stream).
+  QUIC_REFUSED_STREAM,
 
   // No error. Used as bound while iterating.
   QUIC_STREAM_LAST_ERROR,