Enable the optional permission prompt persistence toggle on grouped infobars

chrome/browser/permissions/grouped_permission_infobar_delegate.h

 // Copyright 2016 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_PERMISSIONS_GROUPED_PERMISSION_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_PERMISSIONS_GROUPED_PERMISSION_INFOBAR_DELEGATE_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 15 matching lines @@
   // Implementation is in platform-specific infobar file.
   static std::unique_ptr<infobars::InfoBar> CreateInfoBar(
       infobars::InfoBarManager* infobar_manager,
       std::unique_ptr<GroupedPermissionInfoBarDelegate> delegate);
 
   GroupedPermissionInfoBarDelegate(
       const GURL& requesting_origin,
       const std::vector<ContentSettingsType>& types);
   ~GroupedPermissionInfoBarDelegate() override;
 
+  bool ShouldShowPersistenceToggle() const;
+  bool persist() const { return persist_; }
+  void set_persist(bool persist) { persist_ = persist; }
+
   base::string16 GetMessageText() const override;
 
   int GetPermissionCount() const;
   ContentSettingsType GetContentSettingType(int index) const;
   int GetIconIdForPermission(int index) const;
   // Message text to display for an individual permission at |index|.
   base::string16 GetMessageTextFragment(int index) const;
 
   void ToggleAccept(int position, bool new_value);
 
  protected:
   bool GetAcceptState(int position);
 
  private:
   // ConfirmInfoBarDelegate:
   base::string16 GetButtonLabel(InfoBarButton button) const override;
   int GetButtons() const override;
 
   // InfoBarDelegate:
   Type GetInfoBarType() const override;
 
   const GURL requesting_origin_;
   const std::vector<ContentSettingsType> types_;
   std::vector<bool> accept_states_;
+  bool persist_;
 
   DISALLOW_COPY_AND_ASSIGN(GroupedPermissionInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_PERMISSIONS_GROUPED_PERMISSION_INFOBAR_DELEGATE_H_