Add new version QUIC_VERSION_29 in which streams honor RST_STREAM + NO_ERROR.

net/quic/quic_protocol.cc

Index: net/quic/quic_protocol.cc
diff --git a/net/quic/quic_protocol.cc b/net/quic/quic_protocol.cc
index c241f4e91918fbd7937ea98568b37314bd063366..f0ec4f5b4c5ff2a68491b09352393600f0152bd8 100644
--- a/net/quic/quic_protocol.cc
+++ b/net/quic/quic_protocol.cc
@@ -142,6 +142,8 @@ QuicTag QuicVersionToQuicTag(const QuicVersion version) {
       return MakeQuicTag('Q', '0', '2', '7');
     case QUIC_VERSION_28:
       return MakeQuicTag('Q', '0', '2', '8');
+    case QUIC_VERSION_29:
+      return MakeQuicTag('Q', '0', '2', '9');
     default:
       // This shold be an ERROR because we should never attempt to convert an
       // invalid QuicVersion to be written to the wire.
@@ -172,6 +174,7 @@ string QuicVersionToString(const QuicVersion version) {
     RETURN_STRING_LITERAL(QUIC_VERSION_26);
     RETURN_STRING_LITERAL(QUIC_VERSION_27);
     RETURN_STRING_LITERAL(QUIC_VERSION_28);
+    RETURN_STRING_LITERAL(QUIC_VERSION_29);
     default:
       return "QUIC_VERSION_UNSUPPORTED";
   }