Undef of GetMessage is not needed.

remoting/protocol/v2_authenticator.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 "remoting/protocol/v2_authenticator.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "remoting/base/constants.h"
 #include "remoting/base/rsa_key_pair.h"
 #include "remoting/protocol/ssl_hmac_channel_authenticator.h"
 #include "third_party/webrtc/libjingle/xmllite/xmlelement.h"
 
 using crypto::P224EncryptedKeyExchange;
 
-#if defined(_WIN32) && defined(GetMessage)
-#undef GetMessage
-#endif
-
 namespace remoting {
 namespace protocol {
 
 namespace {
 
 const buzz::StaticQName kEkeTag = { kChromotingXmlNamespace,
                                     "eke-message" };
 const buzz::StaticQName kCertificateTag = { kChromotingXmlNamespace,
                                             "certificate" };
 
@@ skipping 168 matching lines @@
         remote_cert_, auth_key_);
   }
 }
 
 bool V2Authenticator::is_host_side() const {
   return local_key_pair_.get() != nullptr;
 }
 
 }  // namespace protocol
 }  // namespace remoting