Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web.Extensions/ui/HistoryEventArgs.cs

@@ -0,0 +1,16 @@
+namespace System.Web.UI {
+    using System;
+    using System.Collections.Specialized;
+
+    public class HistoryEventArgs : EventArgs {
+        private NameValueCollection _state;
+
+        public HistoryEventArgs(NameValueCollection state) {
+            _state = state;
+        }
+
+        public NameValueCollection State {
+            get { return _state; }
+        }
+    }
+}