Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web.Mobile/UI/MobileControls/Design/SafeNativeMethods.cs

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+//------------------------------------------------------------------------------
+// <copyright file="SafeNativeMethods.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI.Design.MobileControls {
+    using System.Runtime.InteropServices;
+    using System;
+    using System.Security.Permissions;
+    using System.Collections;
+    using System.IO;
+    using System.Text;
+
+    [
+    System.Runtime.InteropServices.ComVisible(false), 
+    System.Security.SuppressUnmanagedCodeSecurityAttribute()
+    ]
+    [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
+    internal class SafeNativeMethods {
+        [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)]
+        internal static extern bool MessageBeep(int type);
+    }
+}