Removing QUIC's VERSION_6, now that QUIC no longer needs to support the

net/quic/quic_protocol.h

 // 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.
 
 #ifndef NET_QUIC_QUIC_PROTOCOL_H_
 #define NET_QUIC_QUIC_PROTOCOL_H_
 
 #include <stddef.h>
 #include <limits>
 #include <map>
@@ skipping 169 matching lines @@
 // The available versions of QUIC. Guaranteed that the integer value of the enum
 // will match the version number.
 // When adding a new version to this enum you should add it to
 // kSupportedQuicVersions (if appropriate), and also add a new case to the
 // helper methods QuicVersionToQuicTag, QuicTagToQuicVersion, and
 // QuicVersionToString.
 enum QuicVersion {
   // Special case to indicate unknown/unsupported QUIC version.
   QUIC_VERSION_UNSUPPORTED = 0,
 
-  QUIC_VERSION_6 = 6,
   QUIC_VERSION_7 = 7,
   QUIC_VERSION_8 = 8,  // Current version.
 };
 
 // This vector contains QUIC versions which we currently support.
 // This should be ordered such that the highest supported version is the first
 // element, with subsequent elements in descending order (versions can be
 // skipped as necessary).
 static const QuicVersion kSupportedQuicVersions[] =
-    {QUIC_VERSION_8, QUIC_VERSION_7, QUIC_VERSION_6};
+    {QUIC_VERSION_8, QUIC_VERSION_7};
 
 typedef std::vector<QuicVersion> QuicVersionVector;
 
 // Upper limit on versions we support.
 NET_EXPORT_PRIVATE QuicVersion QuicVersionMax();
 
+// Lower limit on versions we support.
+NET_EXPORT_PRIVATE QuicVersion QuicVersionMin();
+
 // QuicTag is written to and read from the wire, but we prefer to use
 // the more readable QuicVersion at other levels.
 // Helper function which translates from a QuicVersion to a QuicTag. Returns 0
 // if QuicVersion is unsupported.
 NET_EXPORT_PRIVATE QuicTag QuicVersionToQuicTag(const QuicVersion version);
 
 // Returns appropriate QuicVersion from a QuicTag.
 // Returns QUIC_VERSION_UNSUPPORTED if version_tag cannot be understood.
 NET_EXPORT_PRIVATE QuicVersion QuicTagToQuicVersion(const QuicTag version_tag);
 
@@ skipping 625 matching lines @@
   NET_EXPORT_PRIVATE friend std::ostream& operator<<(
       std::ostream& os, const QuicConsumedData& s);
 
   size_t bytes_consumed;
   bool fin_consumed;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_