Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel/System/ServiceModel/IChannelBaseProxy.cs

@@ -0,0 +1,17 @@
+// <copyright>
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+
+namespace System.ServiceModel
+{
+    using System;
+    using System.ServiceModel.Channels;
+
+    /// <summary>
+    /// An interface used by ChannelBase to override the ServiceChannel that would normally be returned by ClientBase. 
+    /// </summary>
+    internal interface IChannelBaseProxy
+    {
+        ServiceChannel GetServiceChannel();
+    }
+}