Add QUIC v40 which will be used to include changes:

net/quic/chromium/quic_http_stream.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/chromium/quic_http_stream.h"
 
 #include <utility>
 
 #include "base/auto_reset.h"
 #include "base/callback_helpers.h"
@@ skipping 123 matching lines @@
     case QUIC_VERSION_35:
       return HttpResponseInfo::CONNECTION_INFO_QUIC_35;
     case QUIC_VERSION_36:
       return HttpResponseInfo::CONNECTION_INFO_QUIC_36;
     case QUIC_VERSION_37:
       return HttpResponseInfo::CONNECTION_INFO_QUIC_37;
     case QUIC_VERSION_38:
       return HttpResponseInfo::CONNECTION_INFO_QUIC_38;
     case QUIC_VERSION_39:
       return HttpResponseInfo::CONNECTION_INFO_QUIC_39;
+    case QUIC_VERSION_40:
+      return HttpResponseInfo::CONNECTION_INFO_QUIC_40;
   }
   NOTREACHED();
   return HttpResponseInfo::CONNECTION_INFO_QUIC_UNKNOWN_VERSION;
 }
 
 int QuicHttpStream::InitializeStream(const HttpRequestInfo* request_info,
                                      RequestPriority priority,
                                      const NetLogWithSource& stream_net_log,
                                      const CompletionCallback& callback) {
   CHECK(callback_.is_null());
@@ skipping 674 matching lines @@
       quic_stream_error_ != QUIC_STREAM_CONNECTION_ERROR) {
     return ERR_QUIC_PROTOCOL_ERROR;
   }
 
   DCHECK_NE(QUIC_HANDSHAKE_TIMEOUT, quic_connection_error_);
 
   return ERR_QUIC_PROTOCOL_ERROR;
 }
 
 }  // namespace net