dart2js: run dartfmt on tests

tests/compiler/dart2js_native/native_field_invocation6_test.dart

Index: tests/compiler/dart2js_native/native_field_invocation6_test.dart
diff --git a/tests/compiler/dart2js_native/native_field_invocation6_test.dart b/tests/compiler/dart2js_native/native_field_invocation6_test.dart
index cd2d93b0c43bd6232a4e6d3216911c5b797fe98d..3d3b2640ff8a29d109e1235d8503187321501e78 100644
--- a/tests/compiler/dart2js_native/native_field_invocation6_test.dart
+++ b/tests/compiler/dart2js_native/native_field_invocation6_test.dart
@@ -5,8 +5,8 @@
 import "dart:_js_helper";
 import "package:expect/expect.dart";
 
-makeA() native;
-nativeFirst(x, y) native;
+makeA() native ;
+nativeFirst(x, y) native ;
 
 void setup() native """
 nativeFirst = function(x, y) { return x; }
@@ -15,7 +15,6 @@ function A() {}
 makeA = function() { return new A; }
 """;
 
-
 @Native("A")
 class A {
   var _foo;