dart2js: run dartfmt on tests

tests/compiler/dart2js_native/native_call_arity3_frog_test.dart

Index: tests/compiler/dart2js_native/native_call_arity3_frog_test.dart
diff --git a/tests/compiler/dart2js_native/native_call_arity3_frog_test.dart b/tests/compiler/dart2js_native/native_call_arity3_frog_test.dart
index 0adb955c526e716dca89cedd45e80c66e531054d..1b4048ec6c0fb1808a637e7b479b1b9884437ce3 100644
--- a/tests/compiler/dart2js_native/native_call_arity3_frog_test.dart
+++ b/tests/compiler/dart2js_native/native_call_arity3_frog_test.dart
@@ -11,19 +11,19 @@ import "package:expect/expect.dart";
 
 @Native("A")
 class A {
-  int foo(int x) native;
+  int foo(int x) native ;
 }
 
 @Native("B")
 class B {
-  int foo([x = null, y, z = null]) native;
+  int foo([x = null, y, z = null]) native ;
 }
 
 // TODO(sra): Add a case where the parameters have default values.  Wait until
 // dart:html need non-null default values.
 
-A makeA() native;
-B makeB() native;
+A makeA() native ;
+B makeB() native ;
 
 void setup() native """
 function A() {}
@@ -36,7 +36,6 @@ makeA = function(){return new A;};
 makeB = function(){return new B;};
 """;
 
-
 testDynamicContext() {
   var things = [makeA(), makeB()];
   var a = things[0];