Push preg_parser and registry_dict changes upstream

components/policy/core/common/preg_parser_win.h

-// Copyright (c) 2013 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.
-
-// This file provides a parser for PReg files which are used for storing group
-// policy settings in the file system. The file format is documented here:
-//
-// http://msdn.microsoft.com/en-us/library/windows/desktop/aa374407(v=vs.85).aspx
-
-#ifndef COMPONENTS_POLICY_CORE_COMMON_PREG_PARSER_WIN_H_
-#define COMPONENTS_POLICY_CORE_COMMON_PREG_PARSER_WIN_H_
-
-#include <memory>
-#include <vector>
-
-#include "base/strings/string16.h"
-#include "components/policy/policy_export.h"
-
-namespace base {
-class FilePath;
-}
-
-namespace policy {
-
-class PolicyLoadStatusSample;
-class RegistryDict;
-
-namespace preg_parser {
-
-// The magic header in PReg files: ASCII "PReg" + version (0x0001).
-POLICY_EXPORT extern const char kPRegFileHeader[8];
-
-// Reads the PReg file at |file_path| and writes the registry data to |dict|.
-// |root| specifies the registry subtree the caller is interested in,
-// everything else gets ignored.
-POLICY_EXPORT bool ReadFile(const base::FilePath& file_path,
-                            const base::string16& root,
-                            RegistryDict* dict,
-                            PolicyLoadStatusSample* status);
-
-}  // namespace preg_parser
-}  // namespace policy
-
-#endif  // COMPONENTS_POLICY_CORE_COMMON_PREG_PARSER_WIN_H_