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

tests/compiler/dart2js_native/native_method_inlining_test.dart

Index: tests/compiler/dart2js_native/native_method_inlining_test.dart
diff --git a/tests/compiler/dart2js_native/native_method_inlining_test.dart b/tests/compiler/dart2js_native/native_method_inlining_test.dart
index 8509685a2a6bfe3b90ca9ff3ba94ed96d9113ddb..a3aee2cb500dc96360b8197673ba8a6630c55c21 100644
--- a/tests/compiler/dart2js_native/native_method_inlining_test.dart
+++ b/tests/compiler/dart2js_native/native_method_inlining_test.dart
@@ -6,11 +6,12 @@
 // number of arguments in the call site AND the call site is inlined.
 
 import "package:expect/expect.dart";
-import 'dart:_js_helper' show NoInline;
+import 'dart:_js_helper' show Native, NoInline;
 
 typedef int Int2Int(int x);
 
-class A native "A" {
+@Native("A")
+class A {
   int foo([x, y, z]) native;
 
   // Calls can be inlined provided they don't pass an argument.