Support class and typedef literals as expressions.

tests/utils/dummy_compiler_test.dart

 // Copyright (c) 2012, 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.
 
 // Smoke test of the dart2js compiler API.
 
 #import('../../lib/compiler/compiler.dart');
 #import('dart:uri');
 
 Future<String> provider(Uri uri) {
   Completer<String> completer = new Completer<String>();
   String source;
   if (uri.scheme == "main") {
     source = "main() {}";
   } else if (uri.scheme == "lib") {
     if (uri.path.endsWith("/core.dart")) {
       source = """#library('core');
-                  class Object{}
+                  class Object {}
+                  class Type {}
                   class bool {}
                   class num {}
                   class int {}
                   class double{}
                   class String{}
                   class Function{}
                   class List {}
                   class Map {}
                   class Closure {}
                   class Dynamic_ {}
@@ skipping 24 matching lines @@
 
 main() {
   String code = compile(new Uri.fromComponents(scheme: 'main'),
                         new Uri.fromComponents(scheme: 'lib'),
                         new Uri.fromComponents(scheme: 'package'),
                         provider, handler).value;
   if (code === null) {
     throw 'Compilation failed';
   }
 }