Add @JSName annotation for native fields and methods - second try.

tests/compiler/dart2js_native/native_method_rename3_frog_test.dart

Index: tests/compiler/dart2js_native/native_method_rename3_frog_test.dart
diff --git a/tests/compiler/dart2js_native/native_method_rename3_frog_test.dart b/tests/compiler/dart2js_native/native_method_rename3_frog_test.dart
index d1ec6aa02a00f62af8ca35c4cb594fa7c6d24b0c..88fc6410c564c5aaed875ff9b4b943a5fdca82ae 100644
--- a/tests/compiler/dart2js_native/native_method_rename3_frog_test.dart
+++ b/tests/compiler/dart2js_native/native_method_rename3_frog_test.dart
@@ -6,11 +6,13 @@
 // #3. The name does not get
 
 class A native "*A" {
-  int foo() native 'fooA';
+  @JSName('fooA')
+  int foo() native;
 }
 
 class B extends A native "*B" {
-  int foo() native 'fooB';
+  @JSName('fooB')
+  int foo() native;
   int fooA() => 333;
 }