Implement request mobile site.

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_
+#ifndef IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_CONFIGURATION_H_
+#define IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_CONFIGURATION_H_
 
 #import <Foundation/Foundation.h>
 #import <UIKit/UIKit.h>
 
 @class ReadingListMenuNotifier;
 
 namespace web {
 enum class UserAgentType : short;
 }  // namespace web
 
@@ skipping 30 matching lines @@
 
 // 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_
+#endif  // IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_CONFIGURATION_H_