Move crypto files out of base, to a top level directory.

base/crypto/capi_util.h

-// Copyright (c) 2011 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 BASE_CRYPTO_CAPI_UTIL_H_
-#define BASE_CRYPTO_CAPI_UTIL_H_
-#pragma once
-
-#include <windows.h>
-#include <wincrypt.h>
-
-#include "base/base_api.h"
-
-namespace base {
-
-// CryptAcquireContext when passed CRYPT_NEWKEYSET or CRYPT_DELETEKEYSET in
-// flags is not thread-safe. For such calls, we create a global lock to
-// synchronize it.
-//
-// From "Threading Issues with Cryptographic Service Providers",
-// <http://msdn.microsoft.com/en-us/library/aa388149(v=VS.85).aspx>:
-//
-// "The CryptAcquireContext function is generally thread safe unless
-// CRYPT_NEWKEYSET or CRYPT_DELETEKEYSET is specified in the dwFlags
-// parameter."
-BASE_API BOOL CryptAcquireContextLocked(HCRYPTPROV* prov,
-                                        LPCWSTR container,
-                                        LPCWSTR provider,
-                                        DWORD prov_type,
-                                        DWORD flags);
-
-}  // namespace base
-
-#endif  // BASE_CRYPTO_CAPI_UTIL_H_