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

chrome/app/signature_validator_win_unittest.cc

 // Copyright 2013 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 <windows.h>
 #include <atlstr.h>
-#include <wincrypt.h>
 #include <wintrust.h>
 
 #include "base/base_paths.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
 #include "chrome/app/signature_validator_win.h"
 #include "crypto/sha2.h"
+#include "crypto/wincrypt_shim.h"
 #include "net/cert/test_root_certs.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 const char kGoogleCertIssuer[] = "Google Inc";
 const int CERT_BUFFER_SIZE = 1024;
 
 const base::FilePath::CharType kCertificateRelativePath[] =
     FILE_PATH_LITERAL("chrome\\app\\test_data\\certificates\\");
@@ skipping 90 matching lines @@
 TEST_F(SignatureValidatorTest, CertPinningTest) {
   RunTest(L"different_hash.dll", true, false);
 }
 
 TEST_F(SignatureValidatorTest, ExpiredCertTest) {
   //TODO(caitkp): Figure out how to sign a dll with an expired cert.
   RunTest(L"expired.dll", false, false);
 }