Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/UI/CssClassPropertyAttribute.cs

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+//------------------------------------------------------------------------------
+// <copyright file="CssClassPropertyAttribute.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI {
+
+    using System;
+    using System.ComponentModel;
+    using System.Globalization;
+    using System.Web.Util;
+    
+
+    /// <devdoc>
+    ///     CssClassPropertyAttribute 
+    ///     The CssClassPropertyAttribute is applied to properties that contain CssClass names.
+    ///     The designer uses this attribute to add a design-time CssClass editor experience
+    ///     to the property in the property grid.
+    /// </devdoc>
+    [AttributeUsage(AttributeTargets.Property)]
+    public sealed class CssClassPropertyAttribute : Attribute {
+
+        public CssClassPropertyAttribute() {
+        }
+    }
+}