Change return type of get typeVariables and typeArguments in ClassMirror.

tests/lib/mirrors/mirrors_test.dart

 // Copyright (c) 2011, 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 MirrorsTest;
 
 import 'dart:mirrors';
 
 import '../../light_unittest.dart';
 
@@ skipping 27 matching lines @@
 testInvoke(mirrors) {
   var instance = new Class();
   var instMirror = reflect(instance);
 
   expect(instMirror.invoke(const Symbol("m"),['A', 'B', instance]).reflectee,
          equals({"a": 'A', "b":'B', "c": instance}));
   expect(instMirror.invoke(const Symbol("notDefined"), []).reflectee,
          equals("DNU"));
   expect(instMirror.invoke(const Symbol("m"), []).reflectee,
          equals("DNU"));  // Wrong arity.
-  // TODO(rmacnak): Implement access to private members. 
+  // TODO(rmacnak): Implement access to private members.
   // expect(instMirror.invoke(const Symbol("_n"), [3, 4]).reflectee,
   //        equals(7));
 
   var classMirror = instMirror.type;
   expect(classMirror.invoke(const Symbol("s"),['A', 'B', instance]).reflectee,
          equals({"a": 'A', "b":'B', "c": instance}));
   expect(() => classMirror.invoke(const Symbol("notDefined"), []).reflectee,
          throws);
   expect(() => classMirror.invoke(const Symbol("s"), []).reflectee,
          throws);  // Wrong arity.
@@ skipping 174 matching lines @@
   var methodMirror = libMirror.functions[const Symbol('testNames')];
   var variableMirror = classMirror.variables[const Symbol('field')];
 
   expect(libMirror.simpleName, equals(const Symbol('MirrorsTest')));
   expect(libMirror.qualifiedName, equals(const Symbol('MirrorsTest')));
 
   expect(classMirror.simpleName, equals(const Symbol('Class')));
   expect(classMirror.qualifiedName, equals(const Symbol('MirrorsTest.Class')));
 
   if (!isDart2js) { // TODO(ahe): Implement this in dart2js.
-    TypeVariableMirror typeVariable = classMirror.typeVariables.values.single;
+    TypeVariableMirror typeVariable = classMirror.typeVariables.single;
     expect(typeVariable.simpleName, equals(const Symbol('T')));
     expect(typeVariable.qualifiedName,
            equals(const Symbol('MirrorsTest.Class.T')));
 
     expect(typedefMirror.simpleName, equals(const Symbol('Typedef')));
     expect(typedefMirror.qualifiedName,
            equals(const Symbol('MirrorsTest.Typedef')));
 
     var typedefMirrorDeNovo = reflectClass(Typedef);
     expect(typedefMirrorDeNovo.simpleName, equals(const Symbol('Typedef')));
@@ skipping 28 matching lines @@
   test("Test current library uri", () {
     testLibraryUri(new Class(),
       (Uri uri) => uri.path.endsWith('/mirrors_test.dart'));
   });
   test("Test dart library uri", () {
     testLibraryUri("test", (Uri uri) => uri == Uri.parse('dart:core'));
   });
   test("Test simple and qualifiedName", () { testNames(mirrors); });
   test("Test reflect type", () { testReflectClass(mirrors); });
 }