Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

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+//------------------------------------------------------------------------------
+// <copyright file="INamingContainer.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+/*
+ * Marker interface implemented by all controls that wish to introduce a new
+ * logical namespace into the control hierarchy tree.
+ * 
+ * Copyright (c) 2000 Microsoft Corporation
+ */
+namespace System.Web.UI {
+    using System.ComponentModel;
+
+using System;
+
+/// <devdoc>
+///    <para>Identifies 
+///       a container control that scopes a new ID namespace within a page's control
+///       hierarchy. This is a marker interface only.</para>
+/// </devdoc>
+public interface INamingContainer {
+}
+}