Create a DefaultPrefStore to hold registered application-default preference v...

chrome/browser/prefs/default_pref_store.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_BROWSER_PREFS_DEFAULT_PREF_STORE_H_
+#define CHROME_BROWSER_PREFS_DEFAULT_PREF_STORE_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/scoped_ptr.h"
+#include "chrome/common/pref_store.h"
+
+// This PrefStore keeps track of default preference values set when a
+// preference is registered with the PrefService.
+class DefaultPrefStore : public PrefStore {
+ public:
+  DefaultPrefStore();
+  virtual ~DefaultPrefStore();
+
+  // PrefStore methods:
+  virtual DictionaryValue* prefs();
+  virtual PrefStore::PrefReadError ReadPrefs();
+
+ private:
+  // The default preference values.
+  scoped_ptr<DictionaryValue> prefs_;
+
+  DISALLOW_COPY_AND_ASSIGN(DefaultPrefStore);
+};
+
+#endif  // CHROME_BROWSER_PREFS_DEFAULT_PREF_STORE_H_