[ObjC ARC] Converts ios/chrome/browser/ui/tools_menu:tools_menu to ARC.

ios/chrome/browser/ui/tools_menu/tools_menu_model.mm

 // Copyright 2017 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.
 
 #include "ios/chrome/browser/ui/tools_menu/tools_menu_model.h"
 
 #include "components/strings/grit/components_strings.h"
 #include "ios/chrome/browser/experimental_flags.h"
 #include "ios/chrome/browser/ui/commands/ios_command_ids.h"
 #import "ios/chrome/browser/ui/tools_menu/reading_list_menu_view_item.h"
 #include "ios/chrome/browser/ui/tools_menu/tools_menu_constants.h"
 #include "ios/chrome/browser/ui/ui_util.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #import "ios/public/provider/chrome/browser/user_feedback/user_feedback_provider.h"
 #include "ios/web/public/user_agent.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 // Menu items can be marked as visible or not when Incognito is enabled.
 // The following bits are used for |visibility| field in |MenuItemInfo|.
 const NSInteger kVisibleIncognitoOnly = 1 << 0;
 const NSInteger kVisibleNotIncognitoOnly = 1 << 1;
 
 // Declare all the possible items.
 const MenuItemInfo itemInfoList[] = {
     // clang-format off
   { IDS_IOS_TOOLS_MENU_NEW_TAB,           kToolsMenuNewTabId,
     IDC_NEW_TAB,                          ToolbarTypeAll,
@@ skipping 77 matching lines @@
         return true;
     case IDS_IOS_TOOLS_MENU_REQUEST_MOBILE_SITE:
       if (experimental_flags::IsRequestMobileSiteEnabled())
         return (configuration.userAgentType == web::UserAgentType::DESKTOP);
       else
         return false;
     default:
       return true;
   }
 }