Componentize //chrome/browser/prefs/tracked.

chrome/browser/prefs/tracked/dictionary_hash_store_contents.h

-// Copyright 2014 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_TRACKED_DICTIONARY_HASH_STORE_CONTENTS_H_
-#define CHROME_BROWSER_PREFS_TRACKED_DICTIONARY_HASH_STORE_CONTENTS_H_
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "chrome/browser/prefs/tracked/hash_store_contents.h"
-
-namespace base {
-class DictionaryValue;
-}  // namespace base
-
-namespace user_prefs {
-class PrefRegistrySyncable;
-}  // namespace user_prefs
-
-// Implements HashStoreContents by storing MACs in a DictionaryValue. The
-// DictionaryValue is presumed to be the contents of a PrefStore.
-// RegisterProfilePrefs() may be used to register all of the preferences used by
-// this object.
-class DictionaryHashStoreContents : public HashStoreContents {
- public:
-  // Constructs a DictionaryHashStoreContents that reads from and writes to
-  // |storage|.
-  explicit DictionaryHashStoreContents(base::DictionaryValue* storage);
-
-  // Registers required preferences.
-  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
-
-  // HashStoreContents implementation
-  std::string hash_store_id() const override;
-  void Reset() override;
-  bool IsInitialized() const override;
-  const base::DictionaryValue* GetContents() const override;
-  scoped_ptr<MutableDictionary> GetMutableContents() override;
-  std::string GetSuperMac() const override;
-  void SetSuperMac(const std::string& super_mac) override;
-
- private:
-  base::DictionaryValue* storage_;
-
-  DISALLOW_COPY_AND_ASSIGN(DictionaryHashStoreContents);
-};
-
-#endif  // CHROME_BROWSER_PREFS_TRACKED_DICTIONARY_HASH_STORE_CONTENTS_H_