Imported Upstream version 5.2.0.175

Former-commit-id: bb0468d0f257ff100aa895eb5fe583fb5dfbf900

mcs/class/System/System.Net.Security/SslStream.cs

@@ -40,7 +40,6 @@ using CipherAlgorithmType = System.Security.Authentication.CipherAlgorithmType;
 using HashAlgorithmType = System.Security.Authentication.HashAlgorithmType;
 using ExchangeAlgorithmType = System.Security.Authentication.ExchangeAlgorithmType;
 
-using System;
 using System.IO;
 using System.Net;
 using System.Net.Security;
@@ -49,7 +48,6 @@ using System.Security.Cryptography.X509Certificates;
 using System.Security.Permissions;
 using System.Security.Principal;
 using System.Security.Cryptography;
-
 using System.Threading.Tasks;
 
 using MNS = Mono.Net.Security;
@@ -402,10 +400,81 @@ namespace System.Net.Security
 	}
 }
 #else // !SECURITY_DEP
+
+using System.IO;
+using System.Threading.Tasks;
+
 namespace System.Net.Security
 {
-	public class SslStream
+	public class SslStream : Stream
 	{
+		public SslStream (object innerStream)
+		{
+		}
+
+		public override bool CanRead {
+			get {
+				throw new NotImplementedException ();
+			}
+		}
+
+		public override bool CanSeek {
+			get {
+				throw new NotImplementedException ();
+			}
+		}
+
+		public override bool CanWrite {
+			get {
+				throw new NotImplementedException ();
+			}
+		}
+
+		public override long Length {
+			get {
+				throw new NotImplementedException ();
+			}
+		}
+
+		public override long Position {
+			get {
+				throw new NotImplementedException ();
+			}
+
+			set {
+				throw new NotImplementedException ();
+			}
+		}
+
+		public override void Flush ()
+		{
+			throw new NotImplementedException ();
+		}
+
+		public override int Read (System.Byte [] buffer, int offset, int count)
+		{
+			throw new NotImplementedException ();
+		}
+
+		public override long Seek (long offset, SeekOrigin origin)
+		{
+			throw new NotImplementedException ();
+		}
+
+		public override void SetLength (long value)
+		{
+			throw new NotImplementedException ();
+		}
+
+		public override void Write (System.Byte [] buffer, int offset, int count)
+		{
+			throw new NotImplementedException ();
+		}
+
+		public virtual Task AuthenticateAsClientAsync (string targetHost, object clientCertificates, object enabledSslProtocols, bool checkCertificateRevocation)
+		{
+			throw new NotImplementedException ();
+		}
 	}
 }
 #endif