Along with sending the SCUP message, this CL includes small fixes which

net/quic/quic_protocol.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_protocol.h"
 
 #include "base/stl_util.h"
 #include "net/quic/quic_utils.h"
 
 using base::StringPiece;
@@ skipping 151 matching lines @@
     case QUIC_VERSION_16:
       return MakeQuicTag('Q', '0', '1', '6');
     case QUIC_VERSION_18:
       return MakeQuicTag('Q', '0', '1', '8');
     case QUIC_VERSION_19:
       return MakeQuicTag('Q', '0', '1', '9');
     case QUIC_VERSION_20:
       return MakeQuicTag('Q', '0', '2', '0');
     case QUIC_VERSION_21:
       return MakeQuicTag('Q', '0', '2', '1');
+    case QUIC_VERSION_22:
+      return MakeQuicTag('Q', '0', '2', '2');
     default:
       // This shold be an ERROR because we should never attempt to convert an
       // invalid QuicVersion to be written to the wire.
       LOG(ERROR) << "Unsupported QuicVersion: " << version;
       return 0;
   }
 }
 
 QuicVersion QuicTagToQuicVersion(const QuicTag version_tag) {
   for (size_t i = 0; i < arraysize(kSupportedQuicVersions); ++i) {
@@ skipping 11 matching lines @@
 case x: \
 return #x
 
 string QuicVersionToString(const QuicVersion version) {
   switch (version) {
     RETURN_STRING_LITERAL(QUIC_VERSION_16);
     RETURN_STRING_LITERAL(QUIC_VERSION_18);
     RETURN_STRING_LITERAL(QUIC_VERSION_19);
     RETURN_STRING_LITERAL(QUIC_VERSION_20);
     RETURN_STRING_LITERAL(QUIC_VERSION_21);
+    RETURN_STRING_LITERAL(QUIC_VERSION_22);
     default:
       return "QUIC_VERSION_UNSUPPORTED";
   }
 }
 
 string QuicVersionVectorToString(const QuicVersionVector& versions) {
   string result = "";
   for (size_t i = 0; i < versions.size(); ++i) {
     if (i != 0) {
       result.append(",");
@@ skipping 547 matching lines @@
       sent_time(QuicTime::Zero()),
       bytes_sent(0),
       nack_count(0),
       transmission_type(transmission_type),
       all_transmissions(all_transmissions),
       in_flight(false) {
   all_transmissions->insert(sequence_number);
 }
 
 }  // namespace net