Update dart2js_foreign suite as we now validate annotations.

dart/tests/compiler/dart2js_foreign/native_wrapping_function2_test.dart

Index: dart/tests/compiler/dart2js_foreign/native_wrapping_function2_test.dart
diff --git a/dart/tests/compiler/dart2js_foreign/native_wrapping_function2_test.dart b/dart/tests/compiler/dart2js_foreign/native_wrapping_function2_test.dart
index 9690d893df535d864917fc197798980fdb6b4363..a123a1f549e8501b71696325803946f7c4e3753b 100644
--- a/dart/tests/compiler/dart2js_foreign/native_wrapping_function2_test.dart
+++ b/dart/tests/compiler/dart2js_foreign/native_wrapping_function2_test.dart
@@ -2,28 +2,30 @@
 // 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 'native_metadata.dart';
+
 typedef void Callback0();
 typedef void Callback1(arg1);
 typedef void Callback2(arg1, arg2);
 
-@native("*A")
+@Native("*A")
 class A {
-  @native("return closure();")
+  @Native("return closure();")
   foo0(Callback0 closure);
 
-  @native("return closure(arg1);")
+  @Native("return closure(arg1);")
   foo1(Callback1 closure, arg1);
 
-  @native("return closure(arg1, arg2);")
+  @Native("return closure(arg1, arg2);")
   foo2(Callback2 closure, arg1, arg2);
 
-  @native("return closure == (void 0) ? 42 : closure();")
+  @Native("return closure == (void 0) ? 42 : closure();")
   foo3([Callback0 closure]);
 }
 
 @native makeA();
 
-@native("""
+@Native("""
 function A() {}
 makeA = function(){return new A;};
 """)