Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Data.Linq/SqlClient/Common/IConnectionManager.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Data;
+using System.Data.Common;
+
+namespace System.Data.Linq.SqlClient {
+
+    internal interface IConnectionManager {
+        DbConnection UseConnection(IConnectionUser user);
+        void ReleaseConnection(IConnectionUser user);
+    }
+
+    internal interface IConnectionUser {
+        void CompleteUse();
+    }
+}