Implements support for reflection on parameters.

test_reflectable/test/proxy_test.dart

 // Copyright (c) 2015, the Dart Team. All rights reserved. Use of this
 // source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 
 // File being transformed by the reflectable transformer.
 // Implements a very simple kind of proxy object.
 
 library test_reflectable.test.proxy_test;
 
 import 'package:reflectable/reflectable.dart';
 import 'package:unittest/unittest.dart';
 
 class ProxyReflectable extends Reflectable {
   const ProxyReflectable()
-      : super(instanceInvokeCapability, typeCapability);
+      : super(instanceInvokeCapability, declarationsCapability);
 }
 const proxyReflectable = const ProxyReflectable();
 
 @proxyReflectable
 class A {
   int i = 0;
   String foo() => i == 42 ? "OK!" : "Error!";
   void bar(int i) {
     this.i = i;
   }
@@ skipping 35 matching lines @@
   final A a = new A();
   Proxy proxy = new Proxy(a, methodMapForA);
 
   // Use it.
   test("Using proxy", () {
     proxy.bar(42);
     expect(a.i, 42);
     expect(proxy.foo(), "OK!");
   });
 }