[Sync] Move //sync to //components/sync.

sync/util/encryptor.h

-// 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.
-
-#ifndef SYNC_UTIL_ENCRYPTOR_H_
-#define SYNC_UTIL_ENCRYPTOR_H_
-
-#include <string>
-
-namespace syncer {
-
-class Encryptor {
- public:
-  // All methods below should be thread-safe.
-  virtual bool EncryptString(const std::string& plaintext,
-                             std::string* ciphertext) = 0;
-
-  virtual bool DecryptString(const std::string& ciphertext,
-                             std::string* plaintext) = 0;
-
- protected:
-  virtual ~Encryptor() {}
-};
-
-}  // namespace syncer
-
-#endif  // SYNC_UTIL_ENCRYPTOR_H_