fix toString calls on Type objects in smoke

pkg/smoke/lib/static.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Static implementation of smoke services using code-generated data.
 library smoke.static;
 
 import 'dart:math' as math;
 
 import 'package:logging/logging.dart';
@@ skipping 98 matching lines @@
   void write(Object object, Symbol name, value) {
     var setter = _setters[name];
     if (setter == null) {
       throw new MissingCodeException('setter "$name" in $object');
     }
     setter(object, value);
   }
 
   invoke(object, Symbol name, List args, {Map namedArgs, bool adjust: false}) {
     var method;
-    if (object is Type) {
+    if (object is Type && name != #toString) {
       var classMethods = _staticMethods[object];
       method = classMethods == null ? null : classMethods[name];
     } else {
       var getter = _getters[name];
       method = getter == null ? null : getter(object);
     }
     if (method == null) {
       throw new MissingCodeException('method "$name" in $object');
     }
     var tentativeError;
@@ skipping 153 matching lines @@
 
 /// Exception thrown when trynig to access something that should be there, but
 /// the code generator didn't include it.
 class MissingCodeException implements Exception {
   final String description;
   MissingCodeException(this.description);
 
   String toString() => 'Missing $description. '
       'Code generation for the smoke package seems incomplete.';
 }