[protector] Homepage UI.

chrome/browser/protector/base_setting_change.h

 // Copyright (c) 2012 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_BASE_SETTING_CHANGE_H_
 #define CHROME_BROWSER_PROTECTOR_BASE_SETTING_CHANGE_H_
 #pragma once
 
 #include <utility>
 
@@ skipping 90 matching lines @@
   virtual DisplayName GetApplyDisplayName() const;
 
   // Returns a URL uniquely identifying new (to be applied) settings.
   // ProtectorService uses this URLs to decide whether to merge a change
   // with already existing active changes. The URL may be empty.
   virtual GURL GetNewSettingURL() const;
 
   // Returns true if this change can be merged with other changes.
   virtual bool CanBeMerged() const;
 
+  // Returns |false| if this change is not user-visible. It won't be presented
+  // to user on it's own then, but may be merged with other changes and applied
+  // or discarded.
+  virtual bool IsUserVisible() const;
+
  protected:
   // Profile instance we've been associated with by an |Init| call.
   Profile* profile() { return profile_; }
 
  private:
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(BaseSettingChange);
 };
 
 // Display name priorities of various change types:
 extern const size_t kDefaultSearchProviderChangeNamePriority;
 extern const size_t kSessionStartupChangeNamePriority;
+extern const size_t kHomepageChangeNamePriority;
 
 // TODO(ivankr): CompositeSettingChange that incapsulates multiple
 // BaseSettingChange instances.
 
 // Allocates and initializes BaseSettingChange implementation for default search
 // provider setting. Reports corresponding histograms. Both |actual| and
 // |backup| may be NULL if corresponding values are unknown or invalid.
 // |backup| will be owned by the returned |BaseSettingChange| instance. |actual|
 // is not owned and is safe to destroy after Protector::ShowChange has been
 // called for the returned instance.
 BaseSettingChange* CreateDefaultSearchProviderChange(const TemplateURL* actual,
                                                      TemplateURL* backup);
 
 // Allocates and initializes BaseSettingChange implementation for session
 // startup setting, including the pinned tabs. Reports corresponding histograms.
 BaseSettingChange* CreateSessionStartupChange(
     const SessionStartupPref& actual_startup_pref,
     const PinnedTabCodec::Tabs& actual_pinned_tabs,
     const SessionStartupPref& backup_startup_pref,
     const PinnedTabCodec::Tabs& backup_pinned_tabs);
 
+BaseSettingChange* CreateHomepageChange(
+    const std::string& actual_homepage,
+    bool actual_homepage_is_ntp,
+    bool actual_show_homepage,
+    const std::string& backup_homepage,
+    bool backup_homepage_is_ntp,
+    bool backup_show_homepage);
+
 // Allocates and initializes BaseSettingChange implementation for an unknown
 // preferences change with invalid backup.
 BaseSettingChange* CreatePrefsBackupInvalidChange();
 
 }  // namespace protector
 
 #endif  // CHROME_BROWSER_PROTECTOR_BASE_SETTING_CHANGE_H_