Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Activities/System/Activities/NoPersistHandle.cs

@@ -0,0 +1,36 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//-----------------------------------------------------------------------------
+
+namespace System.Activities
+{
+    using System;
+    using System.Runtime;
+    using System.Runtime.Serialization;
+
+    [DataContract]
+    public class NoPersistHandle : Handle
+    {
+        public NoPersistHandle()
+        {
+        }
+
+        public void Enter(NativeActivityContext context)
+        {
+            context.ThrowIfDisposed();
+            ThrowIfUninitialized();
+
+            context.EnterNoPersist(this);
+        }
+
+        public void Exit(NativeActivityContext context)
+        {
+            context.ThrowIfDisposed();
+            ThrowIfUninitialized();
+
+            context.ExitNoPersist(this);
+        }
+    }
+}
+
+