Run dartfmt on all files under runtime.

runtime/observatory/tests/observatory_ui/field_ref/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/field_ref.dart';
 import 'package:observatory/src/elements/instance_ref.dart';
 import '../mocks.dart';
 
 main() {
   FieldRefElement.tag.ensureRegistration();
 
   final iTag = InstanceRefElement.tag.name;
 
   const isolate = const IsolateRefMock();
   const field = const FieldRefMock();
-  const declaredType = const InstanceMock(kind: M.InstanceKind.type,
-                                          name: 'CustomObject');
+  const declaredType =
+      const InstanceMock(kind: M.InstanceKind.type, name: 'CustomObject');
   const field_non_dynamic = const FieldRefMock(declaredType: declaredType);
   final repository = new InstanceRepositoryMock();
   test('instantiation', () {
     final e = new FieldRefElement(isolate, field, repository);
     expect(e, isNotNull, reason: 'element correctly created');
     expect(e.isolate, equals(isolate));
     expect(e.field, equals(field));
   });
   group('elements', () {
     test('created after attachment (dynamic)', () async {
@@ skipping 11 matching lines @@
       document.body.append(e);
       await e.onRendered.first;
       expect(e.children.length, isNonZero, reason: 'has elements');
       expect(e.querySelectorAll(iTag).length, equals(1));
       e.remove();
       await e.onRendered.first;
       expect(e.children.length, isZero, reason: 'is empty');
     });
   });
 }