dart2js: run dartfmt on tests

tests/compiler/dart2js_extra/interceptor_named_arguments_test.dart

 // Copyright (c) 2015, 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.
 
-
 // Test that the proper one-shot interceptor is used for different
 // combinations of named arguments.
 import "package:expect/expect.dart";
 
 // Use dart:html to get interceptors into play.
 import "dart:html";
 
 // [createFragment] has the same signature as in [Element].
 class Other {
   createFragment(html, {validator, treeSanitizer}) {
     int result = 0;
     result += validator == null ? 0 : 2;
     result += treeSanitizer == null ? 0 : 1;
     return result;
   }
 }
 
 @NoInline()
 bool wontTell(bool x) => x;
 
-
 // Ensure that we use the interceptor only once per context so that we
 // actually get a one-shot interceptor. This is a little brittle...
 @NoInline()
 testA(thing) {
   Expect.equals(0, thing.createFragment(null));
 }
 
 @NoInline()
 testB(thing) {
   Expect.equals(2, thing.createFragment(null, validator: 1));
 }
 
 @NoInline()
 testC(thing) {
   Expect.equals(1, thing.createFragment(null, treeSanitizer: 1));
 }
 
 @NoInline()
 testD(thing) {
   Expect.equals(3, thing.createFragment(null, validator: 1, treeSanitizer: 1));
 }
 
-main () {
+main() {
   // Ensure we get interceptors into play.
   var thing = wontTell(true) ? new Other() : new DivElement();
   testA(thing);
   testB(thing);
   testC(thing);
   testD(thing);
 }