Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/Hosting/ICustomRuntimeManager.cs

@@ -0,0 +1,25 @@
+//------------------------------------------------------------------------------
+// <copyright file="ICustomRuntimeManager.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.Web.Hosting {
+    using System;
+    using System.Runtime.InteropServices;
+
+    [ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("A0BBBDFF-5AF5-42E3-9753-34441F764A6B")]
+    internal interface ICustomRuntimeManager {
+
+        // Registers an ICustomRuntime so that we can keep track of them.
+        [return: MarshalAs(UnmanagedType.Interface)]
+        ICustomRuntimeRegistrationToken Register(
+            [In, MarshalAs(UnmanagedType.Interface)] ICustomRuntime customRuntime);
+    }
+
+    [ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("3A8E9CED-D3C9-4C4B-8956-6F15E2F559D9")]
+    internal interface ICustomRuntimeRegistrationToken {
+        // Unregisters an ICustomRuntime.
+        void Unregister();
+    }
+}