Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel/System/ServiceModel/Security/DelegatingHeader.cs

@@ -0,0 +1,82 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.ServiceModel.Security
+{
+    using System.Xml;
+    using System.ServiceModel.Channels;
+    using System.ServiceModel;
+
+    abstract class DelegatingHeader : MessageHeader
+    {
+        MessageHeader innerHeader;
+
+        protected DelegatingHeader(MessageHeader innerHeader)
+        {
+            if (innerHeader == null)
+            {
+                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("innerHeader");
+            }
+            this.innerHeader = innerHeader;
+        }
+
+        public override bool MustUnderstand
+        {
+            get
+            {
+                return this.innerHeader.MustUnderstand;
+            }
+        }
+
+        public override string Name
+        {
+            get
+            {
+                return this.innerHeader.Name;
+            }
+        }
+
+        public override string Namespace
+        {
+            get
+            {
+                return this.innerHeader.Namespace;
+            }
+        }
+
+        public override bool Relay
+        {
+            get
+            {
+                return this.innerHeader.Relay;
+            }
+        }
+
+        public override string Actor
+        {
+            get
+            {
+                return this.innerHeader.Actor;
+            }
+        }
+
+        protected MessageHeader InnerHeader
+        {
+            get
+            {
+                return this.innerHeader;
+            }
+        }
+
+        protected override void OnWriteStartHeader(XmlDictionaryWriter writer, MessageVersion messageVersion)
+        {
+            this.innerHeader.WriteStartHeader(writer, messageVersion);
+        }
+
+        protected override void OnWriteHeaderContents(XmlDictionaryWriter writer, MessageVersion messageVersion)
+        {
+            this.innerHeader.WriteHeaderContents(writer, messageVersion);
+        }
+    }
+}