Format all tests.

tests/lib_strong/html/url_test.dart

 // Copyright (c) 2012, 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.
 
 library url_test;
+
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_config.dart';
 import 'dart:html';
 import 'dart:typed_data';
 
 main() {
   useHtmlConfiguration();
 
   Blob createImageBlob() {
     var canvas = new CanvasElement();
@@ skipping 36 matching lines @@
     });
 
     test('revokeObjectUrl', () {
       var blob = createImageBlob();
       var url = Url.createObjectUrlFromBlob(blob);
       expect(url, startsWith('blob:'));
       Url.revokeObjectUrl(url);
 
       var img = new ImageElement();
       // Image should fail to load since the URL was revoked.
-      img.onError.listen(expectAsync((_) {
-      }));
+      img.onError.listen(expectAsync((_) {}));
       img.onLoad.listen((_) {
         fail('URL should not have loaded.');
       });
       img.src = url;
     });
-
   });
 }