Move policy code into components/policy.

chrome/browser/policy/config_dir_policy_loader.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 CHROME_BROWSER_POLICY_CONFIG_DIR_POLICY_LOADER_H_
-#define CHROME_BROWSER_POLICY_CONFIG_DIR_POLICY_LOADER_H_
-
-#include "base/files/file_path.h"
-#include "base/files/file_path_watcher.h"
-#include "components/policy/core/common/async_policy_loader.h"
-#include "components/policy/core/common/policy_types.h"
-
-namespace base {
-class Value;
-}
-
-namespace policy {
-
-// A policy loader implementation backed by a set of files in a given
-// directory. The files should contain JSON-formatted policy settings. They are
-// merged together and the result is returned in a PolicyBundle.
-// The files are consulted in lexicographic file name order, so the
-// last value read takes precedence in case of policy key collisions.
-class ConfigDirPolicyLoader : public AsyncPolicyLoader {
- public:
-  ConfigDirPolicyLoader(scoped_refptr<base::SequencedTaskRunner> task_runner,
-                        const base::FilePath& config_dir,
-                        PolicyScope scope);
-  virtual ~ConfigDirPolicyLoader();
-
-  // AsyncPolicyLoader implementation.
-  virtual void InitOnBackgroundThread() OVERRIDE;
-  virtual scoped_ptr<PolicyBundle> Load() OVERRIDE;
-  virtual base::Time LastModificationTime() OVERRIDE;
-
- private:
-  // Loads the policy files at |path| into the |bundle|, with the given |level|.
-  void LoadFromPath(const base::FilePath& path,
-                    PolicyLevel level,
-                    PolicyBundle* bundle);
-
-  // Merges the 3rd party |policies| into the |bundle|, with the given |level|.
-  void Merge3rdPartyPolicy(const base::Value* policies,
-                           PolicyLevel level,
-                           PolicyBundle* bundle);
-
-  // Callback for the FilePathWatchers.
-  void OnFileUpdated(const base::FilePath& path, bool error);
-
-  // The directory containing the policy files.
-  base::FilePath config_dir_;
-
-  // Policies loaded by this provider will have this scope.
-  PolicyScope scope_;
-
-  // Watchers for events on the mandatory and recommended subdirectories of
-  // |config_dir_|.
-  base::FilePathWatcher mandatory_watcher_;
-  base::FilePathWatcher recommended_watcher_;
-
-  DISALLOW_COPY_AND_ASSIGN(ConfigDirPolicyLoader);
-};
-
-}  // namespace policy
-
-#endif  // CHROME_BROWSER_POLICY_CONFIG_DIR_POLICY_LOADER_H_