deprecate FLAGS_quic_disable_pre_34

net/quic/core/quic_versions.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/core/quic_versions.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "net/quic/core/quic_flags.h"
 #include "net/quic/core/quic_types.h"
@@ skipping 16 matching lines @@
 }
 
 QuicVersionVector CurrentSupportedVersions() {
   return FilterSupportedVersions(AllSupportedVersions());
 }
 
 QuicVersionVector FilterSupportedVersions(QuicVersionVector versions) {
   QuicVersionVector filtered_versions(versions.size());
   filtered_versions.clear();  // Guaranteed by spec not to change capacity.
   for (QuicVersion version : versions) {
-    if (version < QUIC_VERSION_34) {
-      if (!FLAGS_quic_disable_pre_34) {
-        filtered_versions.push_back(version);
-      }
-    } else if (version == QUIC_VERSION_35) {
+    if (version == QUIC_VERSION_35) {
       if (FLAGS_quic_enable_version_35) {
         filtered_versions.push_back(version);
       }
     } else if (version == QUIC_VERSION_36) {
       if (FLAGS_quic_enable_version_35 && FLAGS_quic_enable_version_36_v2) {
         filtered_versions.push_back(version);
       }
     } else {
       filtered_versions.push_back(version);
     }
   }
   return filtered_versions;
 }
 
 QuicVersionVector VersionOfIndex(const QuicVersionVector& versions, int index) {
   QuicVersionVector version;
   int version_count = versions.size();
   if (index >= 0 && index < version_count) {
     version.push_back(versions[index]);
   } else {
     version.push_back(QUIC_VERSION_UNSUPPORTED);
   }
   return version;
 }
 
 QuicTag QuicVersionToQuicTag(const QuicVersion version) {
   switch (version) {
-    case QUIC_VERSION_32:
-      return MakeQuicTag('Q', '0', '3', '2');
-    case QUIC_VERSION_33:
-      return MakeQuicTag('Q', '0', '3', '3');
     case QUIC_VERSION_34:
       return MakeQuicTag('Q', '0', '3', '4');
     case QUIC_VERSION_35:
       return MakeQuicTag('Q', '0', '3', '5');
     case QUIC_VERSION_36:
       return MakeQuicTag('Q', '0', '3', '6');
     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;
@@ skipping 12 matching lines @@
            << QuicUtils::TagToString(version_tag);
   return QUIC_VERSION_UNSUPPORTED;
 }
 
 #define RETURN_STRING_LITERAL(x) \
   case x:                        \
     return #x
 
 string QuicVersionToString(const QuicVersion version) {
   switch (version) {
-    RETURN_STRING_LITERAL(QUIC_VERSION_32);
-    RETURN_STRING_LITERAL(QUIC_VERSION_33);
     RETURN_STRING_LITERAL(QUIC_VERSION_34);
     RETURN_STRING_LITERAL(QUIC_VERSION_35);
     RETURN_STRING_LITERAL(QUIC_VERSION_36);
     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(",");
     }
     result.append(QuicVersionToString(versions[i]));
   }
   return result;
 }
 
 }  // namespace net