Killing off quic V17. Not flag protected.

net/quic/quic_framer.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_framer.h"
 
 #include "base/containers/hash_tables.h"
 #include "base/stl_util.h"
 #include "net/quic/crypto/crypto_framer.h"
 #include "net/quic/crypto/crypto_handshake_message.h"
@@ skipping 376 matching lines @@
                       << QuicVersionToString(quic_version_);
           return kNoPacket;
         }
         if (!AppendStopWaitingFrame(
                 header, *frame.stop_waiting_frame, &writer)) {
           LOG(DFATAL) << "AppendStopWaitingFrame failed";
           return kNoPacket;
         }
         break;
       case PING_FRAME:
-        if (quic_version_ <= QUIC_VERSION_17) {
+        if (quic_version_ <= QUIC_VERSION_16) {
           LOG(DFATAL) << "Attempt to add a PingFrame in "
                       << QuicVersionToString(quic_version_);
           return kNoPacket;
         }
         // Ping has no payload.
         break;
       case RST_STREAM_FRAME:
         if (!AppendRstStreamFrame(*frame.rst_stream_frame, &writer)) {
           LOG(DFATAL) << "AppendRstStreamFrame failed";
           return kNoPacket;
@@ skipping 821 matching lines @@
           return RaiseError(QUIC_INVALID_STOP_WAITING_DATA);
         }
         if (!visitor_->OnStopWaitingFrame(stop_waiting_frame)) {
           DVLOG(1) << "Visitor asked to stop further processing.";
           // Returning true since there was no parsing error.
           return true;
         }
         continue;
       }
       case PING_FRAME: {
-        if (quic_version_ <= QUIC_VERSION_17) {
+        if (quic_version_ <= QUIC_VERSION_16) {
           LOG(DFATAL) << "Trying to read a Ping in "
                       << QuicVersionToString(quic_version_);
           return RaiseError(QUIC_INTERNAL_ERROR);
         }
         // Ping has no payload.
         QuicPingFrame ping_frame;
         if (!visitor_->OnPingFrame(ping_frame)) {
           DVLOG(1) << "Visitor asked to stop further processing.";
           // Returning true since there was no parsing error.
           return true;
@@ skipping 1087 matching lines @@
 
 bool QuicFramer::RaiseError(QuicErrorCode error) {
   DVLOG(1) << "Error detail: " << detailed_error_;
   set_error(error);
   visitor_->OnError(this);
   reader_.reset(NULL);
   return false;
 }
 
 }  // namespace net