Add QuicStrCat.

net/quic/core/quic_packets.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_packets.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_utils.h"
 #include "net/quic/core/quic_versions.h"
+#include "net/quic/platform/api/quic_str_cat.h"

[Ryan Hamilton, 2016/12/22 18:17:30]

Is this required? I don't think we use StrCat in this file.

 
 using base::StringPiece;
 using std::string;
 
 namespace net {
 
 size_t GetPacketHeaderSize(QuicVersion version,
                            const QuicPacketHeader& header) {
   return GetPacketHeaderSize(version, header.public_header.connection_id_length,
                              header.public_header.version_flag,
@@ skipping 217 matching lines @@
   serialized_packet->encrypted_length = 0;
 }
 
 char* CopyBuffer(const SerializedPacket& packet) {
   char* dst_buffer = new char[packet.encrypted_length];
   memcpy(dst_buffer, packet.encrypted_buffer, packet.encrypted_length);
   return dst_buffer;
 }
 
 }  // namespace net