| // 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. |
| |
| #ifndef CHROME_BROWSER_PREFS_BROWSER_UI_PREFS_MIGRATOR_H_ |
| #define CHROME_BROWSER_PREFS_BROWSER_UI_PREFS_MIGRATOR_H_ |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "base/prefs/pref_store.h" |
| #include "base/prefs/writeable_pref_store.h" |
| |
| // When prefs are loaded from disk this class migrates some previously |
| // dynamically registered preferences to their new home in a statically |
| // registered dictionary. It can't follow the usual migration pattern because |
| // it is migrating preferences that aren't registered at migration time and has |
| // to iterate over a raw DictionaryValue looking for keys to migrate. |
| // |
| // Objects of this class delete themselves after the migration. |
| // |
| // TODO(dgrogan): Delete this for m41. See http://crbug.com/167256. |
| |
| class BrowserUIPrefsMigrator : public PrefStore::Observer { |
| public: |
| explicit BrowserUIPrefsMigrator(WriteablePrefStore* pref_store); |
| |
| // Overrides from PrefStore::Observer. |
| virtual void OnPrefValueChanged(const std::string& key) OVERRIDE {} |
| virtual void OnInitializationCompleted(bool succeeded) OVERRIDE; |
| |
| private: |
| friend struct base::DefaultDeleter<BrowserUIPrefsMigrator>; |
| |
| virtual ~BrowserUIPrefsMigrator(); |
| |
| WriteablePrefStore* pref_store_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BrowserUIPrefsMigrator); |
| }; |
| |
| #endif // CHROME_BROWSER_PREFS_BROWSER_UI_PREFS_MIGRATOR_H_ |