Revert "Revert "Allow multiple tags in native clause.""

tests/compiler/dart2js_native/native_call_arity2_frog_test.dart

Index: tests/compiler/dart2js_native/native_call_arity2_frog_test.dart
diff --git a/tests/compiler/dart2js_native/native_call_arity2_frog_test.dart b/tests/compiler/dart2js_native/native_call_arity2_frog_test.dart
index 0014b0073bfd5e8b2d1ffb8cb1231352da5d14b5..79417750da3b8f6daa68fbe471e28b4a434073b3 100644
--- a/tests/compiler/dart2js_native/native_call_arity2_frog_test.dart
+++ b/tests/compiler/dart2js_native/native_call_arity2_frog_test.dart
@@ -7,11 +7,11 @@ import "package:expect/expect.dart";
 // This is a similar test to NativeCallArity1FrogTest, but makes sure
 // that subclasses also get the right number of arguments.
 
-class A native "*A" {
+class A native "A" {
   int foo([x, y]) native;
 }
 
-class B extends A native "*B" {
+class B extends A native "B" {
   int foo([x, y]) native;
 }