Add unit tests for NTLMv1 portable implementation

net/http/ntlm.h

 // Copyright 2017 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_BASE_NTLM_H_
 #define NET_BASE_NTLM_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 54 matching lines @@
                                           NegotiateFlags rhs) {
   return static_cast<NegotiateFlags>(static_cast<TFlagsInt>(lhs) &
                                      static_cast<TFlagsInt>(rhs));
 }
 
 static constexpr uint8_t SIGNATURE[] = "NTLMSSP";
 static constexpr size_t SIGNATURE_LEN = arraysize(SIGNATURE);
 static constexpr size_t SECURITY_BUFFER_LEN =
     (2 * sizeof(uint16_t)) + sizeof(uint32_t);
 static constexpr size_t NEGOTIATE_MESSAGE_LEN = 32;
+static constexpr size_t CHALLENGE_HEADER_LEN = 32;
 static constexpr size_t RESPONSE_V1_LEN = 24;
 static constexpr size_t CHALLENGE_LEN = 8;
 static constexpr size_t NTLM_HASH_LEN = 16;
 
 static constexpr NegotiateFlags NEGOTIATE_MESSAGE_FLAGS =
     NegotiateFlags::UNICODE | NegotiateFlags::OEM |
     NegotiateFlags::REQUEST_TARGET | NegotiateFlags::NTLM |
     NegotiateFlags::ALWAYS_SIGN | NegotiateFlags::EXTENDED_SESSIONSECURITY;
 
 }  // namespce ntlm
 }  // namespace net
 
 #endif  // NET_BASE_NTLM_H_