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

base/crypto/secure_hash.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_SECURE_HASH_H_
-#define BASE_CRYPTO_SECURE_HASH_H_
-#pragma once
-
-#include "base/base_api.h"
-#include "base/basictypes.h"
-
-namespace base {
-
-// A wrapper to calculate secure hashes incrementally, allowing to
-// be used when the full input is not known in advance.
-class BASE_API SecureHash {
- public:
-  enum Algorithm {
-    SHA256,
-  };
-  virtual ~SecureHash() {}
-
-  static SecureHash* Create(Algorithm type);
-
-  virtual void Update(const void* input, size_t len) = 0;
-  virtual void Finish(void* output, size_t len) = 0;
-
- protected:
-  SecureHash() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(SecureHash);
-};
-
-}  // namespace base
-
-#endif  // BASE_CRYPTO_SECURE_HASH_H_