Remove unused QuicErrorCode QUIC_PACKET_FOR_NONEXISTENT_STREAM. No behavior change.

net/quic/quic_utils.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_utils.h"
 
 #include <ctype.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 161 matching lines @@
     RETURN_STRING_LITERAL(QUIC_INVALID_GOAWAY_DATA);
     RETURN_STRING_LITERAL(QUIC_INVALID_WINDOW_UPDATE_DATA);
     RETURN_STRING_LITERAL(QUIC_INVALID_BLOCKED_DATA);
     RETURN_STRING_LITERAL(QUIC_INVALID_STOP_WAITING_DATA);
     RETURN_STRING_LITERAL(QUIC_INVALID_ACK_DATA);
     RETURN_STRING_LITERAL(QUIC_INVALID_VERSION_NEGOTIATION_PACKET);
     RETURN_STRING_LITERAL(QUIC_INVALID_PUBLIC_RST_PACKET);
     RETURN_STRING_LITERAL(QUIC_DECRYPTION_FAILURE);
     RETURN_STRING_LITERAL(QUIC_ENCRYPTION_FAILURE);
     RETURN_STRING_LITERAL(QUIC_PACKET_TOO_LARGE);
-    RETURN_STRING_LITERAL(QUIC_PACKET_FOR_NONEXISTENT_STREAM);
     RETURN_STRING_LITERAL(QUIC_PEER_GOING_AWAY);
     RETURN_STRING_LITERAL(QUIC_HANDSHAKE_FAILED);
     RETURN_STRING_LITERAL(QUIC_CRYPTO_TAGS_OUT_OF_ORDER);
     RETURN_STRING_LITERAL(QUIC_CRYPTO_TOO_MANY_ENTRIES);
     RETURN_STRING_LITERAL(QUIC_CRYPTO_TOO_MANY_REJECTS);
     RETURN_STRING_LITERAL(QUIC_CRYPTO_INVALID_VALUE_LENGTH)
     RETURN_STRING_LITERAL(QUIC_CRYPTO_MESSAGE_AFTER_HANDSHAKE_COMPLETE);
     RETURN_STRING_LITERAL(QUIC_CRYPTO_INTERNAL_ERROR);
     RETURN_STRING_LITERAL(QUIC_CRYPTO_VERSION_NOT_SUPPORTED);
     RETURN_STRING_LITERAL(QUIC_CRYPTO_HANDSHAKE_STATELESS_REJECT);
@@ skipping 150 matching lines @@
   }
   return s;
 }
 
 // static
 QuicPriority QuicUtils::HighestPriority() {
   return QuicWriteBlockedList::kHighestPriority;
 }
 
 }  // namespace net