Revert of relnote: Protect against a QUIC crash bug but logging a DFATAL and

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 <stdint.h>
 #include <limits>
@@ skipping 528 matching lines @@
   // The connection has too many outstanding received packets.
   QUIC_TOO_MANY_OUTSTANDING_RECEIVED_PACKETS = 69,
   // The quic connection job to load server config is cancelled.
   QUIC_CONNECTION_CANCELLED = 70,
   // Disabled QUIC because of high packet loss rate.
   QUIC_BAD_PACKET_LOSS_RATE = 71,
   // Disabled QUIC because of too many PUBLIC_RESETs post handshake.
   QUIC_PUBLIC_RESETS_POST_HANDSHAKE = 73,
   // Disabled QUIC because of too many timeouts with streams open.
   QUIC_TIMEOUTS_WITH_OPEN_STREAMS = 74,
-  // Closed because we failed to serialize a packet.
-  QUIC_FAILED_TO_SERIALIZE_PACKET = 75,
 
   // Crypto errors.
 
   // Hanshake failed.
   QUIC_HANDSHAKE_FAILED = 28,
   // Handshake message contained out of order tags.
   QUIC_CRYPTO_TAGS_OUT_OF_ORDER = 29,
   // Handshake message contained too many entries.
   QUIC_CRYPTO_TOO_MANY_ENTRIES = 30,
   // Handshake message contained an invalid value length.
@@ skipping 39 matching lines @@
   // A handshake message arrived, but we are still validating the
   // previous handshake message.
   QUIC_CRYPTO_MESSAGE_WHILE_VALIDATING_CLIENT_HELLO = 54,
   // A server config update arrived before the handshake is complete.
   QUIC_CRYPTO_UPDATE_BEFORE_HANDSHAKE_COMPLETE = 65,
   // This connection involved a version negotiation which appears to have been
   // tampered with.
   QUIC_VERSION_NEGOTIATION_MISMATCH = 55,
 
   // No error. Used as bound while iterating.
-  QUIC_LAST_ERROR = 76,
+  QUIC_LAST_ERROR = 75,
 };
 
 struct NET_EXPORT_PRIVATE QuicPacketPublicHeader {
   QuicPacketPublicHeader();
   explicit QuicPacketPublicHeader(const QuicPacketPublicHeader& other);
   ~QuicPacketPublicHeader();
 
   // Universal header. All QuicPacket headers will have a connection_id and
   // public flags.
   QuicConnectionId connection_id;
@@ skipping 474 matching lines @@
       : iov(iov), iov_count(iov_count), total_length(total_length) {}
 
   const struct iovec* iov;
   const int iov_count;
   const size_t total_length;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_