Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/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();
+    }
+}