Remove remaining dead code that was used to implement grouped permission drop downs

chrome/browser/ui/page_info/permission_menu_model.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_UI_PAGE_INFO_PERMISSION_MENU_MODEL_H_
 #define CHROME_BROWSER_UI_PAGE_INFO_PERMISSION_MENU_MODEL_H_
 
 #include "base/macros.h"
 #include "chrome/browser/ui/page_info/page_info_ui.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/content_settings/core/common/content_settings_types.h"
 #include "ui/base/models/simple_menu_model.h"
 #include "url/gurl.h"
 
 class HostContentSettingsMap;
 class Profile;
 
 class PermissionMenuModel : public ui::SimpleMenuModel,
                             public ui::SimpleMenuModel::Delegate {
  public:
   typedef base::Callback<void(const PageInfoUI::PermissionInfo&)>
       ChangeCallback;
 
   // Create a new menu model for permission settings.
   PermissionMenuModel(Profile* profile,
                       const GURL& url,
                       const PageInfoUI::PermissionInfo& info,
                       const ChangeCallback& callback);
-  // Creates a special-case menu model that only has the allow and block
-  // options.  It does not track a permission type.  |setting| is the
-  // initial selected option.  It must be either CONTENT_SETTING_ALLOW or
-  // CONTENT_SETTING_BLOCK.
-  PermissionMenuModel(Profile* profile,
-                      const GURL& url,
-                      ContentSetting setting,
-                      const ChangeCallback& callback);
   ~PermissionMenuModel() override;
 
   // Overridden from ui::SimpleMenuModel::Delegate:
   bool IsCommandIdChecked(int command_id) const override;
   bool IsCommandIdEnabled(int command_id) const override;
   void ExecuteCommand(int command_id, int event_flags) override;
 
  private:
   HostContentSettingsMap* host_content_settings_map_;
 
   // The permission info represented by the menu model.
   PageInfoUI::PermissionInfo permission_;
 
   // Callback to be called when the permission's setting is changed.
   ChangeCallback callback_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionMenuModel);
 };
 
 #endif  // CHROME_BROWSER_UI_PAGE_INFO_PERMISSION_MENU_MODEL_H_