Revert "Fix observatory tests broken by running dartfmt."

runtime/observatory/tests/observatory_ui/stack_trace_tree_config/element_test.dart

 // Copyright (c) 2016, 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:html';
 import 'package:unittest/unittest.dart';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/stack_trace_tree_config.dart';
 
 main() {
@@ skipping 124 matching lines @@
   group('events', () {
     test('onModeChange', () async {
       final e = new StackTraceTreeConfigElement();
       document.body.append(e);
       await e.onRendered.first;
       expect(e.mode, equals(ProfileTreeMode.function));
       e.onModeChange.listen(expectAsync((_) {
         expect(e.mode, equals(ProfileTreeMode.code));
       }, count: 1));
       final select = (e.querySelector('.mode-select') as SelectElement);
-      select.selectedIndex = select.options.indexOf((select.options.toSet()
-            ..removeAll(select.selectedOptions))
-          .toList()
-          .first);
+      select.selectedIndex = select.options.indexOf(
+          (select.options.toSet()
+            ..removeAll(select.selectedOptions)).toList().first
+        );
       select.dispatchEvent(new Event("change"));
       e.remove();
       await e.onRendered.first;
     });
     test('onDirectionChange', () async {
       final e = new StackTraceTreeConfigElement();
       document.body.append(e);
       await e.onRendered.first;
       expect(e.direction, equals(M.ProfileTreeDirection.exclusive));
       e.onDirectionChange.listen(expectAsync((_) {
         expect(e.direction, equals(M.ProfileTreeDirection.inclusive));
       }, count: 1));
       final select = (e.querySelector('.direction-select') as SelectElement);
-      select.selectedIndex = select.options.indexOf((select.options.toSet()
-            ..removeAll(select.selectedOptions))
-          .toList()
-          .first);
+      select.selectedIndex = select.options.indexOf(
+          (select.options.toSet()
+            ..removeAll(select.selectedOptions)).toList().first
+        );
       select.dispatchEvent(new Event("change"));
       e.remove();
       await e.onRendered.first;
     });
     test('onFilterChange', () async {
       final e = new StackTraceTreeConfigElement();
       document.body.append(e);
       await e.onRendered.first;
       expect(e.direction, equals(M.ProfileTreeDirection.exclusive));
       e.onFilterChange.listen(expectAsync((_) {
         expect(e.filter, equals('value'));
       }, count: 1));
       var input = (e.querySelector('input') as TextInputElement);
       input.value = 'value';
       input.dispatchEvent(new Event("change"));
       e.remove();
       await e.onRendered.first;
     });
   });
 }