Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/Security/RoleClaimProvider.cs

@@ -0,0 +1,45 @@
+// ==++==
+// 
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// 
+// ==--==
+// <OWNER>[....]</OWNER>
+// 
+//
+// RoleClaimProvider.cs
+//
+
+namespace System.Web.Security
+{
+    using System.Collections.Generic;
+    using System.Security.Claims;
+
+    /// <summary>
+    /// This internal class is used to wrap role claims that are served up by the RolePrincipal.  They need to be kept distinct from other claims.
+    /// ClaimsIdentity has a property the holds this type.
+    /// made on parameters.
+    /// </summary>    
+
+    internal class RoleClaimProvider
+    {
+        RolePrincipal _rolePrincipal;
+        ClaimsIdentity _subject;
+
+        public RoleClaimProvider(RolePrincipal rolePrincipal, ClaimsIdentity subject)
+        {
+            _rolePrincipal  = rolePrincipal;
+            _subject        = subject;
+        }
+
+        public IEnumerable<Claim> Claims
+        {
+            get
+            {
+                foreach (string role in _rolePrincipal.GetRoles())
+                {
+                    yield return new Claim(_subject.RoleClaimType, role, ClaimValueTypes.String, _rolePrincipal.ProviderName, _rolePrincipal.ProviderName, _subject);
+                }
+            }
+        }
+    }
+}