[protector] Added SessionStartupChange for representing changes in SessionStartupPref.

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 <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 
 class Browser;
 class Profile;
 class TemplateURL;
+struct SessionStartupPref;
 
 namespace protector {
 
 // Base class for setting change tracked by Protector.
 class BaseSettingChange {
  public:
   BaseSettingChange();
   virtual ~BaseSettingChange();
 
   // Applies initial actions to the setting if needed. Must be called before
@@ skipping 52 matching lines @@
 // 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. Reports corresponding histograms.
+BaseSettingChange* CreateSessionStartupChange(
+    const SessionStartupPref& actual,
+    const SessionStartupPref& backup);
+
 }  // namespace protector
 
 #endif  // CHROME_BROWSER_PROTECTOR_BASE_SETTING_CHANGE_H_