Format all tests.

tests/html/mutationobserver_test.dart

 // Copyright (c) 2011, 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 mutationobserver_test;
+
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_individual_config.dart';
 import 'dart:html';
 
 // Due to https://code.google.com/p/chromium/issues/detail?id=329103
 // mutationObservers sometimes do not fire if the node being observed is GCed
 // so we keep around references to all nodes we have created mutation
 // observers for.
 var keepAlive = [];
 
@@ skipping 33 matching lines @@
       // If it's not supported, don't block waiting for it.
       if (!MutationObserver.supported) {
         return () => done;
       }
 
       return expectAsyncUntil(callback, () => done);
     }
 
     test('empty options is syntax error', () {
       expect(() {
-        var mutationObserver = new MutationObserver(
-            (mutations, observer) { expect(false, isTrue,
-                reason: 'Should not be reached'); });
-        expect(() { mutationObserver.observe(document, {}); },
-               throws);
+        var mutationObserver = new MutationObserver((mutations, observer) {
+          expect(false, isTrue, reason: 'Should not be reached');
+        });
+        expect(() {
+          mutationObserver.observe(document, {});
+        }, throws);
       }, expectation);
     });
 
     test('direct-parallel options-named', () {
       expect(() {
         var container = new DivElement();
         keepAlive.add(container);
         var div1 = new DivElement();
         var div2 = new DivElement();
         var mutationObserver = new MutationObserver(
@@ skipping 29 matching lines @@
         var mutationObserver = new MutationObserver(
             mutationCallback(2, orderedEquals([div1, div2])));
         mutationObserver.observe(container, childList: true, subtree: true);
 
         container.append(div1);
         div1.append(div2);
       }, expectation);
     });
   });
 }