Componentize //chrome/browser/prefs/tracked.

chrome/browser/prefs/tracked/dictionary_hash_store_contents.cc

-// Copyright (c) 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.
-
-#include "chrome/browser/prefs/tracked/dictionary_hash_store_contents.h"
-
-#include "base/callback.h"
-#include "base/logging.h"
-#include "base/prefs/persistent_pref_store.h"
-#include "base/values.h"
-#include "components/pref_registry/pref_registry_syncable.h"
-
-namespace {
-
-const char kPreferenceMACs[] = "protection.macs";
-const char kSuperMACPref[] = "protection.super_mac";
-
-class MutablePreferenceMacDictionary
-    : public HashStoreContents::MutableDictionary {
- public:
-  explicit MutablePreferenceMacDictionary(base::DictionaryValue* storage);
-
-  // MutableDictionary implementation
-  base::DictionaryValue* operator->() override;
-
- private:
-  base::DictionaryValue* storage_;
-
-  DISALLOW_COPY_AND_ASSIGN(MutablePreferenceMacDictionary);
-};
-
-MutablePreferenceMacDictionary::MutablePreferenceMacDictionary(
-    base::DictionaryValue* storage)
-    : storage_(storage) {
-}
-
-base::DictionaryValue* MutablePreferenceMacDictionary::operator->() {
-  base::DictionaryValue* mac_dictionary = NULL;
-
-  if (!storage_->GetDictionary(kPreferenceMACs, &mac_dictionary)) {
-    mac_dictionary = new base::DictionaryValue;
-    storage_->Set(kPreferenceMACs, mac_dictionary);
-  }
-
-  return mac_dictionary;
-}
-
-}  // namespace
-
-DictionaryHashStoreContents::DictionaryHashStoreContents(
-    base::DictionaryValue* storage)
-    : storage_(storage) {
-}
-
-// static
-void DictionaryHashStoreContents::RegisterProfilePrefs(
-    user_prefs::PrefRegistrySyncable* registry) {
-  registry->RegisterDictionaryPref(kPreferenceMACs);
-  registry->RegisterStringPref(kSuperMACPref, std::string());
-}
-
-std::string DictionaryHashStoreContents::hash_store_id() const {
-  return "";
-}
-
-void DictionaryHashStoreContents::Reset() {
-  storage_->Remove(kPreferenceMACs, NULL);
-}
-
-bool DictionaryHashStoreContents::IsInitialized() const {
-  return storage_->GetDictionary(kPreferenceMACs, NULL);
-}
-
-const base::DictionaryValue* DictionaryHashStoreContents::GetContents() const {
-  const base::DictionaryValue* mac_dictionary = NULL;
-  storage_->GetDictionary(kPreferenceMACs, &mac_dictionary);
-  return mac_dictionary;
-}
-
-scoped_ptr<HashStoreContents::MutableDictionary>
-DictionaryHashStoreContents::GetMutableContents() {
-  return scoped_ptr<MutableDictionary>(
-      new MutablePreferenceMacDictionary(storage_));
-}
-
-std::string DictionaryHashStoreContents::GetSuperMac() const {
-  std::string super_mac_string;
-  storage_->GetString(kSuperMACPref, &super_mac_string);
-  return super_mac_string;
-}
-
-void DictionaryHashStoreContents::SetSuperMac(const std::string& super_mac) {
-  storage_->SetString(kSuperMACPref, super_mac);
-}