Update mirror tests to new mixin application syntax.

tests/lib/mirrors/generic_mixin_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.generic_mixin_applications;
 
 import 'dart:mirrors';
 
 import 'package:expect/expect.dart';
 
 import 'generics_test.dart';
 
 class Super<S> {}
 class Mixin<M> {}
 class Nixim<N> {}
 
-typedef NonGenericMixinApplication1 = Super with Mixin;
-typedef NonGenericMixinApplication2 = Super<num> with Mixin<String>;
+class NonGenericMixinApplication1 = Super with Mixin;
+class NonGenericMixinApplication2 = Super<num> with Mixin<String>;
 
-typedef GenericMixinApplication1<MA> = Super<MA> with Mixin<MA>;
-typedef GenericMixinApplication2<MA> = Super<num> with Mixin<String>;
+class GenericMixinApplication1<MA> = Super<MA> with Mixin<MA>;
+class GenericMixinApplication2<MA> = Super<num> with Mixin<String>;
 
 class NonGenericClass1 extends Super with Mixin {}
 class NonGenericClass2 extends Super<num> with Mixin<String> {}
 
 class GenericClass1<C> extends Super<C> with Mixin<C> {}
 class GenericClass2<C> extends Super<num> with Mixin<String> {}
 
 class GenericMultipleMixins<A, B, C> extends Super<A> with Mixin<B>, Nixim<C> {}
 
 main() {
@@ skipping 63 matching lines @@
   typeArguments(reflect(new GenericClass2<bool>()).type.mixin, [reflectClass(bool)]);
   typeArguments(reflect(new NonGenericClass1()).type.superclass.mixin, [dynamicMirror]);
   typeArguments(reflect(new NonGenericClass2()).type.superclass.mixin, [reflectClass(String)]);
   typeArguments(reflect(new GenericClass1<bool>()).type.superclass.mixin, [reflectClass(bool)]);  /// 02: ok
   typeArguments(reflect(new GenericClass2<bool>()).type.superclass.mixin, [reflectClass(String)]);
   typeArguments(reflect(new GenericMultipleMixins<bool, String, int>()).type.mixin, [reflectClass(bool), reflectClass(String), reflectClass(int)]);
   typeArguments(reflect(new GenericMultipleMixins<bool, String, int>()).type.superclass.mixin, [reflectClass(int)]);  /// 02: ok
   typeArguments(reflect(new GenericMultipleMixins<bool, String, int>()).type.superclass.superclass.mixin, [reflectClass(String)]);  /// 02: ok
   typeArguments(reflect(new GenericMultipleMixins<bool, String, int>()).type.superclass.superclass.superclass.mixin, [reflectClass(bool)]);  /// 02: ok
 }