Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

external/referencesource/System.Configuration/System/Configuration/Internal/configsystem.cs

@@ -0,0 +1,32 @@
+//------------------------------------------------------------------------------
+// <copyright file="ConfigSystem.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration.Internal {
+    using System;
+    using System.Configuration;
+
+    // The runtime config system
+    internal class ConfigSystem : IConfigSystem {
+        IInternalConfigRoot _configRoot;
+        IInternalConfigHost _configHost;
+
+        void IConfigSystem.Init(Type typeConfigHost, params object[] hostInitParams) {
+            _configRoot = new InternalConfigRoot();
+            _configHost = (IInternalConfigHost) TypeUtil.CreateInstanceWithReflectionPermission(typeConfigHost);
+
+            _configRoot.Init(_configHost, false);
+            _configHost.Init(_configRoot, hostInitParams);
+        }
+
+        IInternalConfigHost IConfigSystem.Host {
+            get {return _configHost;}
+        }
+
+        IInternalConfigRoot IConfigSystem.Root {
+            get {return _configRoot;}
+        }
+    }
+}