Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/Routing/RouteBase.cs

@@ -0,0 +1,21 @@
+namespace System.Web.Routing {
+    using System.Collections.Generic;
+    using System.Runtime.CompilerServices;
+
+    [TypeForwardedFrom("System.Web.Routing, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
+    public abstract class RouteBase {
+        public abstract RouteData GetRouteData(HttpContextBase httpContext);
+        public abstract VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values);
+
+        // Default needs to be true to avoid breaking change
+        private bool _routeExistingFiles = true;
+        public bool RouteExistingFiles {
+            get {
+                return _routeExistingFiles;
+            }
+            set {
+                _routeExistingFiles = value;
+            }
+        }
+    }
+}