Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

mcs/class/corlib/System.Security.Principal/WindowsIdentity.cs

@@ -33,6 +33,7 @@ using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using System.Runtime.Serialization;
 using System.Security.Permissions;
+using System.Security.Claims;
 
 namespace System.Security.Principal {
 
@@ -113,6 +114,15 @@ namespace System.Security.Principal {
 			_info = info;
 		}
 
+		internal WindowsIdentity (ClaimsIdentity claimsIdentity, IntPtr userToken)
+			: base (claimsIdentity)
+		{
+			if (userToken != IntPtr.Zero && userToken.ToInt64() > 0)
+			{
+				SetToken (userToken);
+			}
+		}
+
 		[ComVisible (false)]
 		public void Dispose ()
 		{
@@ -269,6 +279,16 @@ namespace System.Security.Principal {
 			info.AddValue ("m_isAuthenticated", _authenticated);
 		}
 
+		internal ClaimsIdentity CloneAsBase ()
+		{
+			return base.Clone();
+		}
+
+		internal IntPtr GetTokenInternal ()
+		{
+			return _token;
+		}
+
 		private void SetToken (IntPtr token) 
 		{
 			if (Environment.IsUnix) {