Add @Native(...) annotation for native class names.

tests/compiler/dart2js_native/super_call_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.
 
+import "dart:_js_helper";
 import "package:expect/expect.dart";
 
 // Test to see if resolving a hidden native class's method interferes with
 // subsequent resolving the subclass's method.  This might happen if the
 // superclass caches the method in the prototype, so shadowing the dispatcher
 // stored on Object.prototype.
 
-class A native "A" {
+@Native("A")
+class A {
   foo() => 'A.foo ${bar()}';
   bar() => 'A.bar';
 }
 
-class B extends A native "B" {
+@Native("B")
+class B extends A {
   bar() => 'B.bar';
 }
 
-class C extends B native "C" {
+@Native("C")
+class C extends B {
   foo() => 'C.foo; super.foo = ${super.foo()}';
   bar() => 'C.bar';
 }
 
-class D extends C native "D" {
+@Native("D")
+class D extends C {
   bar() => 'D.bar';
 }
 
 makeA() native;
 makeB() native;
 makeC() native;
 makeD() native;
 
 void setup() native """
 // This code is all inside 'setup' and so not accesible from the global scope.
@@ skipping 29 matching lines @@
   var a = makeA();
   var b = makeB();
   var c = makeC();
   var d = makeD();
 
   Expect.equals('A.foo A.bar', a.foo());
   Expect.equals('A.foo B.bar', b.foo());
   Expect.equals('C.foo; super.foo = A.foo C.bar', c.foo());
   Expect.equals('C.foo; super.foo = A.foo D.bar', d.foo());
 }