Revert "Revert "Use interceptor convention for methods declared on native classes.""

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 b24893a2d59f7a22bbb4ce31c43567779f26e362..f292ad1bf0cb939d0a9bfe8bf646ace2c41d235c 100644
--- a/tests/compiler/dart2js_native/native_call_arity2_frog_test.dart
+++ b/tests/compiler/dart2js_native/native_call_arity2_frog_test.dart
@@ -13,8 +13,8 @@ class B extends A native "*B" {
   int foo([x, y]) native;
 }
 
-A makeA() native { return new A(); }
-B makeB() native { return new B(); }
+makeA() native;
+makeB() native;
 
 void setup() native """
 function inherits(child, parent) {
@@ -38,7 +38,6 @@ makeA = function(){return new A;};
 makeB = function(){return new B;};
 """;
 
-
 testDynamicContext() {
   var things = [makeA(), makeB()];
   var a = things[0];