Partially implement LibraryMirror.topLevelMembers.

tests/lib/mirrors/synthetic_accessor_properties_test.dart

 // Copyright (c) 2013, 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.
 
 library test.synthetic_accessor_properties;
 
 import 'dart:mirrors';
 import 'package:expect/expect.dart';
 
 import 'stringify.dart';
@@ skipping 50 matching lines @@
          ' type = Class(s(bool) in s(dart.core), top-level))', pm);
 
   mm = cm.staticMembers[#finalStaticField];
   expect('Method(s(finalStaticField) in s(C), synthetic, static, getter)', mm);
   Expect.equals(reflectClass(int), mm.returnType);
   Expect.listEquals([], mm.parameters);
 
   mm = cm.staticMembers[const Symbol('finalStaticField=')];
   Expect.isNull(mm);
 
-  return;  /// 01: ok
 
   mm = lm.topLevelMembers[#topLevelField];
   expect('Method(s(topLevelField) in s(test.synthetic_accessor_properties),'
          ' top-level, synthetic, static, getter)', mm);
   Expect.equals(reflectClass(String), mm.returnType);
   Expect.listEquals([], mm.parameters);
 
   mm = lm.topLevelMembers[const Symbol('topLevelField=')];
   expect('Method(s(topLevelField=) in s(test.synthetic_accessor_properties),'
          ' top-level, synthetic, static, setter)', mm);
   Expect.equals(reflectClass(String), mm.returnType);
   pm = mm.parameters.single;
   expect('Parameter(s(topLevelField) in s(topLevelField=), final,'
          ' type = Class(s(String) in s(dart.core), top-level))', pm);
 
   mm = lm.topLevelMembers[#finalTopLevelField];
   expect('Method(s(finalTopLevelField) in s(test.synthetic_accessor_properties)'
          ', top-level, synthetic, static, getter)', mm);
   Expect.equals(reflectClass(double), mm.returnType);
   Expect.listEquals([], mm.parameters);
 
   mm = lm.topLevelMembers[const Symbol('finalTopLevelField=')];
   Expect.isNull(mm);
 
+  return;  /// 01: ok
+
   mm = lm.topLevelMembers[#C];
   expect('Method(s(C) in s(test.synthetic_accessor_properties),'
          ' top-level, synthetic, static, getter)', mm);
   Expect.equals(reflectClass(Type), mm.returnType);
   Expect.listEquals([], mm.parameters);
 
   mm = lm.topLevelMembers[const Symbol('C=')];
   Expect.isNull(mm);
 }