Sanitize PrefStore interface.

chrome/service/service_process_prefs.h

+// 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.
+
+#ifndef CHROME_SERVICE_SERVICE_PROCESS_PREFS_H_
+#define CHROME_SERVICE_SERVICE_PROCESS_PREFS_H_
+#pragma once
+
+#include <string>
+
+#include "chrome/common/json_pref_store.h"
+
+// Manages persistent preferences for the service process. This is basically a
+// thin wrapper around JsonPrefStore for more comfortable use.
+class ServiceProcessPrefs {
+ public:
+  // |file_message_loop_proxy| is the MessageLoopProxy for a thread on which
+  // file I/O can be done.
+  ServiceProcessPrefs(const FilePath& pref_filename,
+                      base::MessageLoopProxy* file_message_loop_proxy);
+
+  // Read preferences from the backing file.
+  void ReadPrefs();
+
+  // Write the data to the backing file.
+  void WritePrefs();
+
+  // Get a string preference for |key| and store it in |result|.
+  void GetString(const std::string& key, std::string* result);
+
+  // Set a string |value| for |key|.
+  void SetString(const std::string& key, const std::string& value);
+
+  // Get a boolean preference for |key| and store it in |result|.
+  void GetBoolean(const std::string& key, bool* result);
+
+  // Set a boolean |value| for |key|.
+  void SetBoolean(const std::string& key, bool value);
+
+  // Get a dictionary preference for |key| and store it in |result|.
+  void GetDictionary(const std::string& key, DictionaryValue** result);
+
+ private:
+  JsonPrefStore prefs_;
+
+  DISALLOW_COPY_AND_ASSIGN(ServiceProcessPrefs);
+};
+
+#endif  // CHROME_SERVICE_SERVICE_PROCESS_PREFS_H_