Merge tests for dart2js and VM using multi-tests.

tests/lib/mirrors/parameter_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.
 
-/// Test of [ParameterMirror].
+// This tests uses the multi-test "ok" feature:
+// none: Desired behaviour, passing on the VM.
+// 01: Trimmed version for dart2js.
+//
+// TODO(rmacnak,ahe): Remove multi-test when VM and dart2js are on par.
+
+/** Test of [ParameterMirror]. */
 library test.parameter_test;
 
 @MirrorsUsed(targets: 'test.parameter_test', override: '*')
 import 'dart:mirrors';
 
 import 'package:expect/expect.dart';
 import 'stringify.dart';
 
 class B {
   B();
@@ skipping 48 matching lines @@
   MethodMirror barConstructor = constructors[const Symbol('B.bar')];
   expect('Method(s(B.bar) in s(B), constructor)', barConstructor);
   expect('[Parameter(s(z) in s(B.bar),'
          ' type = Class(s(int) in s(dart.core), top-level)), '
          'Parameter(s(x) in s(B.bar),'
          ' type = Type(s(dynamic), top-level))]',
          barConstructor.parameters);
   expect('Class(s(B) in s(test.parameter_test), top-level)',
          barConstructor.returnType);
 
+  // dart2js stops testing here.
+  return;  /// 01: ok
+
   MethodMirror bazConstructor = constructors[const Symbol('B.baz')];
   expect('Method(s(B.baz) in s(B), constructor)', bazConstructor);
   expect('[Parameter(s(x) in s(B.baz), final,'
          ' type = Class(s(int) in s(dart.core), top-level)), '
          'Parameter(s(y) in s(B.baz),'
          ' type = Class(s(int) in s(dart.core), top-level)), '
          'Parameter(s(z) in s(B.baz), final,'
          ' type = Class(s(int) in s(dart.core), top-level))]',
          bazConstructor.parameters);
   expect('Class(s(B) in s(test.parameter_test), top-level)',
@@ skipping 80 matching lines @@
   expect('[Parameter(s(a) in s(bar),'
          ' type = TypeVariable(s(S) in s(C),'
          ' upperBound = Class(s(int) in s(dart.core), top-level))), '
          'Parameter(s(b) in s(bar),'
          ' type = TypeVariable(s(T) in s(C),'
          ' upperBound = Class(s(Object) in s(dart.core), top-level))), '
          'Parameter(s(c) in s(bar),'
          ' type = Class(s(num) in s(dart.core), top-level))]',
          barInC.parameters);
 }