dart2js: run dartfmt on tests

tests/compiler/dart2js_native/native_mixin_multiple3_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import "dart:_js_helper";
 import "package:expect/expect.dart";
 
 // Test that native classes and plain classes can access methods defined only by
 // the same mixin.
 
-
-class D extends Object with M1, M2, M3 {
-}
+class D extends Object with M1, M2, M3 {}
 
 class E extends D {
   foo() => 'E.foo';
 }
 
-class M1 { }
+class M1 {}
 
 class M2 {
   foo() => 'M2.foo';
 }
 
-class M3 { }
+class M3 {}
 
 @Native("A")
 class A {
   foo() => 'A.foo';
 }
 
 @Native("B")
 class B extends A with M1, M2, M3 {}
 
 @Native("C")
 class C extends B {
   foo() => 'C.foo';
 }
 
-makeA() native;
-makeB() native;
-makeC() native;
+makeA() native ;
+makeB() native ;
+makeC() native ;
 
 void setup() native """
 function A() {}
 function B() {}
 function C() {}
 makeA = function(){return new A;};
 makeB = function(){return new B;};
 makeC = function(){return new C;};
 """;
 
@@ skipping 27 matching lines @@
   var e = x[4];
 
   var f = callFoo;
 
   Expect.equals('A.foo', f(a));
   Expect.equals('M2.foo', f(b));
   Expect.equals('C.foo', f(c));
   Expect.equals('M2.foo', f(d));
   Expect.equals('E.foo', f(e));
 }