dart2js: run dartfmt on tests

tests/compiler/dart2js_native/native_field_invocation5_test.dart

 // Copyright (c) 2014, 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";
 
-makeCC() native;
-nativeFirst(x, y) native;
+makeCC() native ;
+nativeFirst(x, y) native ;
 
 void setup() native """
 function CC() {}
 makeCC = function() { return new CC; }
 nativeFirst = function(x, y) { return x; }
 """;
 
 class C {
   foo(x) => x;
 }
@@ skipping 21 matching lines @@
   setup();
   var c = makeCC();
   c.init();
   var c2 = new C();
   c = nativeFirst(c, c2);
   // After the `nativeFirst` invocation dart2js doesn't know if c is a
   // ClickCounter or C. It must go through the interceptor and call the foo$1
   // invocation.
   Expect.equals("### !!! 499 !!! ###", c.foo(499));
 }