Add crypto/wincrypt_shim.h wrapper header to resolve BoringSSL conflicts.

crypto/hmac_win.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 "crypto/hmac.h"
 
 #include <windows.h>
-#include <wincrypt.h>
 
 #include <algorithm>
 #include <vector>
 
 #include "base/logging.h"
 #include "crypto/scoped_capi_types.h"
 #include "crypto/third_party/nss/chromium-blapi.h"
 #include "crypto/third_party/nss/chromium-sha256.h"
+#include "crypto/wincrypt_shim.h"
 
 namespace crypto {
 
 namespace {
 
 // Implementation of HMAC-SHA-256:
 //
 // SHA-256 is supported in Windows XP SP3 or later.  We still need to support
 // Windows XP SP2, so unfortunately we have to implement HMAC-SHA-256 here.
 
@@ skipping 173 matching lines @@
 
   if (!CryptHashData(hash, reinterpret_cast<const BYTE*>(data.data()),
                      static_cast<DWORD>(data.size()), 0))
     return false;
 
   DWORD sha1_size = static_cast<DWORD>(digest_length);
   return !!CryptGetHashParam(hash, HP_HASHVAL, digest, &sha1_size, 0);
 }
 
 }  // namespace crypto