dart2js: run dartfmt on tests

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 245c03cad45b7ed28cd6315b05ac4c17af199900..b99e07bbe91fd79a35580b86f48f18b300a841a8 100644
--- a/tests/compiler/dart2js_native/native_call_arity2_frog_test.dart
+++ b/tests/compiler/dart2js_native/native_call_arity2_frog_test.dart
@@ -10,16 +10,16 @@ import "package:expect/expect.dart";
 
 @Native("A")
 class A {
-  int foo([x, y]) native;
+  int foo([x, y]) native ;
 }
 
 @Native("B")
 class B extends A {
-  int foo([x, y]) native;
+  int foo([x, y]) native ;
 }
 
-makeA() native;
-makeB() native;
+makeA() native ;
+makeB() native ;
 
 void setup() native """
 function inherits(child, parent) {