[iOS] Add Request Mobile Site cell to tools menu

ios/chrome/browser/ui/tools_menu/tools_menu_configuration.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 IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_CONTEXT_H_
 #define IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_CONTEXT_H_
 
 #import <Foundation/Foundation.h>
 #import <UIKit/UIKit.h>
 
 @class ReadingListMenuNotifier;
 
-// Context defining options that can be set to change the tools menu's
-// appearance. All are set to false by default.
-@interface ToolsMenuContext : NSObject
-// Indicate that the menu is being shown while in the tab switcher.
+namespace web {
+enum class UserAgentType : short;
+}  // namespace web
+
+// Configuation defining options that can be set to change the tools menu's
+// appearance. All boolean properties are set to NO, and |userAgentType| is set
+// to NONE by default.
+@interface ToolsMenuConfiguration : NSObject
+// Indicates that the menu is being shown while in the tab switcher.
 @property(nonatomic, getter=isInTabSwitcher) BOOL inTabSwitcher;
-// Indicate that the menu is being shown while there are no open tabs.
+// Indicates that the menu is being shown while there are no open tabs.
 @property(nonatomic, getter=hasNoOpenedTabs) BOOL noOpenedTabs;
-// Indicate that the menu is being shown while in incognito mode.
+// Indicates that the menu is being shown while in incognito mode.
 @property(nonatomic, getter=isInIncognito) BOOL inIncognito;
+
+// Indicates that the menu is being shown while user agent is |userAgentType|.
+// If NONE, shows "Request Desktop Site" in disabled state.
+// If MOBILE, shows "Request Desktop Site" in enabled state.
+// If DESKTOP, shows "Request Mobile Site" in enabled state.
+@property(nonatomic, assign) web::UserAgentType userAgentType;
+
 // View that the menu will be displayed in.
 @property(nonatomic, readonly) UIView* displayView;
 // Button from which popup menu will be opened.
 @property(nonatomic, assign) UIButton* toolsMenuButton;
 // Menu's origin relative to the |displayView|'s coordinate system, calculated
 // from |toolsMenuButton| and |displayView|.
 @property(nonatomic, readonly) CGRect sourceRect;
 // Image insets that should be applied to the tools button if it is displayed,
 // calculated from |toolsMenuButton|.
 @property(nonatomic, readonly) UIEdgeInsets toolsButtonInsets;
 // Notifier for changes to the reading list requiring the menu to be updated.
 // Menus needing to be updated should set themselves as this object's delegate.
 @property(nonatomic, assign) ReadingListMenuNotifier* readingListMenuNotifier;
 
 // Initialize a ToolsMenuContext instance with default values. |displayView| is
 // the weakly-held parent view within which the popup tools menu using this
 // context will be displayed.
 - (instancetype)initWithDisplayView:(UIView*)displayView
     NS_DESIGNATED_INITIALIZER;
 - (instancetype)init NS_UNAVAILABLE;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_CONTEXT_H_