Protector strings and bubble/SettingsChange code refactoring.

chrome/browser/protector/setting_change.h

-// Copyright (c) 2011 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_PROTECTOR_SETTING_CHANGE_H_
-#define CHROME_BROWSER_PROTECTOR_SETTING_CHANGE_H_
-#pragma once
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/string16.h"
-
-class TemplateURL;
-
-namespace protector {
-
-class Protector;
-
-// Base class for setting change tracked by Protector.
-class SettingChange {
- public:
-  // IDs of changes Protector currently tracks.
-  enum Type {
-    // Default search engine has been changed.
-    kSearchEngineChanged,
-
-    // Home page has been changed.
-    kHomePageChanged,
-  };
-
-  explicit SettingChange(Type type) : type_(type) {}
-  virtual ~SettingChange() {}
-
-  Type type() const { return type_; }
-
-  // Returns the old setting presentation to be shown to user.
-  // Returns empty string if the old setting is unavailable.
-  virtual string16 GetOldSetting() const = 0;
-
-  // Returns the new setting presentation to be shown to user.
-  virtual string16 GetNewSetting() const = 0;
-
-  // Persists new setting if needed.
-  virtual void Accept(Protector* protector) {}
-
-  // Restores old setting value if needed.
-  virtual void Revert(Protector* protector) {}
-
-  // Called when user ignored the change.
-  virtual void DoDefault(Protector* protector) {}
-
- private:
-  // Type of the change. Used for strings lookup by UI.
-  // TODO(avayvod): Refactor string selection logic via polymorphism.
-  Type type_;
-
-  DISALLOW_COPY_AND_ASSIGN(SettingChange);
-};
-
-typedef std::vector<SettingChange*> SettingChangeVector;
-typedef void (SettingChange::*SettingChangeAction)(Protector*);
-
-// Allocates and initializes SettingChange implementation for default search
-// provider setting.
-SettingChange* CreateDefaultSearchProviderChange(
-    const TemplateURL* actual,
-    const TemplateURL* backup);
-
-}  // namespace protector
-
-#endif  // CHROME_BROWSER_PROTECTOR_SETTING_CHANGE_H_