Move encryption related files from util folder to encryption folder.

chrome/browser/sync/util/data_encryption.cc

-// Copyright (c) 2010 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.
-//
-// NOTE: this file is Winodws specific.
-
-#include "chrome/browser/sync/util/data_encryption.h"
-
-#include <windows.h>
-#include <wincrypt.h>
-
-#include <cstddef>
-#include <string>
-#include <vector>
-
-#include "base/logging.h"
-
-using std::string;
-using std::vector;
-
-vector<uint8> EncryptData(const string& data) {
-  DATA_BLOB unencrypted_data = { 0 };
-  unencrypted_data.pbData = (BYTE*)(data.data());
-  unencrypted_data.cbData = data.size();
-  DATA_BLOB encrypted_data = { 0 };
-
-  if (!CryptProtectData(&unencrypted_data, L"", NULL, NULL, NULL, 0,
-                        &encrypted_data))
-    LOG(ERROR) << "Encryption fails: " << data;
-
-  vector<uint8> result(encrypted_data.pbData,
-                       encrypted_data.pbData + encrypted_data.cbData);
-  LocalFree(encrypted_data.pbData);
-  return result;
-}
-
-bool DecryptData(const vector<uint8>& in_data, string* out_data) {
-  DATA_BLOB encrypted_data, decrypted_data;
-  encrypted_data.pbData =
-    (in_data.empty() ? NULL : const_cast<BYTE*>(&in_data[0]));
-  encrypted_data.cbData = in_data.size();
-  LPWSTR descrip = L"";
-
-  if (!CryptUnprotectData(&encrypted_data, &descrip, NULL, NULL, NULL, 0,
-                          &decrypted_data)) {
-    LOG(ERROR) << "Decryption fails: ";
-    return false;
-  } else {
-    out_data->assign(reinterpret_cast<const char*>(decrypted_data.pbData),
-                     decrypted_data.cbData);
-    LocalFree(decrypted_data.pbData);
-    return true;
-  }
-}