dart2js: run dartfmt on tests

tests/compiler/dart2js_native/abstract_class_test.dart

Index: tests/compiler/dart2js_native/abstract_class_test.dart
diff --git a/tests/compiler/dart2js_native/abstract_class_test.dart b/tests/compiler/dart2js_native/abstract_class_test.dart
index df5738ce3c6daa0c51dd60caad6e01997bc4531e..18e0af3723467249e10c4e60932a04ee51363df6 100644
--- a/tests/compiler/dart2js_native/abstract_class_test.dart
+++ b/tests/compiler/dart2js_native/abstract_class_test.dart
@@ -10,18 +10,17 @@ import "package:expect/expect.dart";
 // abstract native classes can appear to have instances.
 
 @Native("A")
-abstract class A {
-}
+abstract class A {}
 
 @Native("B")
 abstract class B {
-  foo() native;
+  foo() native ;
 }
 
 class C {}
 
-makeA() native;
-makeB() native;
+makeA() native ;
+makeB() native ;
 
 void setup() native """
 // This code is all inside 'setup' and so not accesible from the global scope.