components: Rename encryptor directory to os_crypt.

components/encryptor/os_crypt.h

-// Copyright 2014 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 COMPONENTS_ENCRYPTOR_OS_CRYPT_H_
-#define COMPONENTS_ENCRYPTOR_OS_CRYPT_H_
-
-#include <string>
-
-#include "base/strings/string16.h"
-
-// The OSCrypt class gives access to simple encryption and decryption of
-// strings. Note that on Mac, access to the system Keychain is required and
-// these calls can block the current thread to collect user input.
-class OSCrypt {
- public:
-  // Encrypt a string16. The output (second argument) is really an array of
-  // bytes, but we're passing it back as a std::string.
-  static bool EncryptString16(const base::string16& plaintext,
-                              std::string* ciphertext);
-
-  // Decrypt an array of bytes obtained with EncryptString16 back into a
-  // string16. Note that the input (first argument) is a std::string, so you
-  // need to first get your (binary) data into a string.
-  static bool DecryptString16(const std::string& ciphertext,
-                              base::string16* plaintext);
-
-  // Encrypt a string.
-  static bool EncryptString(const std::string& plaintext,
-                            std::string* ciphertext);
-
-  // Decrypt an array of bytes obtained with EnctryptString back into a string.
-  // Note that the input (first argument) is a std::string, so you need to first
-  // get your (binary) data into a string.
-  static bool DecryptString(const std::string& ciphertext,
-                            std::string* plaintext);
-
-#if defined(OS_MACOSX)
-  // For unit testing purposes we instruct the Encryptor to use a mock Keychain
-  // on the Mac. The default is to use the real Keychain.
-  static void UseMockKeychain(bool use_mock);
-#endif
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(OSCrypt);
-};
-
-#endif  // COMPONENTS_ENCRYPTOR_OS_CRYPT_H_