Replace quic_restart_flag_quic_big_endian_connection_id with quic_restart_flag_quic_big_endian_conn…

net/quic/core/quic_data_writer.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_data_writer.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "net/quic/core/quic_flags.h"
+#include "net/quic/core/quic_utils.h"
 #include "net/quic/platform/api/quic_endian.h"
 #include "net/quic/platform/api/quic_logging.h"
 
 namespace net {
 
 #define ENDPOINT \
   (perspective_ == Perspective::IS_SERVER ? "Server: " : "Client: ")
 
 QuicDataWriter::QuicDataWriter(size_t size,
                                char* buffer,
@@ skipping 126 matching lines @@
   }
   memset(buffer_ + length_, 0x00, capacity_ - length_);
   length_ = capacity_;
 }
 
 bool QuicDataWriter::WritePaddingBytes(size_t count) {
   return WriteRepeatedByte(0x00, count);
 }
 
 bool QuicDataWriter::WriteConnectionId(uint64_t connection_id) {
-  if (FLAGS_quic_restart_flag_quic_big_endian_connection_id) {
+  if (QuicUtils::IsConnectionIdWireFormatBigEndian(perspective_)) {
     connection_id = QuicEndian::HostToNet64(connection_id);
   }
 
   return WriteUInt64(connection_id);
 }
 
 bool QuicDataWriter::WriteTag(uint32_t tag) {
   return WriteBytes(&tag, sizeof(tag));
 }
 
 }  // namespace net