Use dartfmt on Observatory code

runtime/observatory/lib/src/elements/general_error.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.
 
 library general_error_element;
 
 import 'dart:html';
 import 'dart:async';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/helpers/nav_bar.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/nav/notify.dart';
 import 'package:observatory/src/elements/nav/top_menu.dart';
 
 class GeneralErrorElement extends HtmlElement implements Renderable {
   static const tag = const Tag<GeneralErrorElement>('general-error',
-                     dependencies: const [NavTopMenuElement.tag,
-                                          NavNotifyElement.tag]);
+      dependencies: const [NavTopMenuElement.tag, NavNotifyElement.tag]);
 
   RenderingScheduler _r;
 
   Stream<RenderedEvent<GeneralErrorElement>> get onRendered => _r.onRendered;
 
   M.NotificationRepository _notifications;
   String _message;
 
   String get message => _message;
 
   set message(String value) => _message = _r.checkAndReact(_message, value);
 
-
   factory GeneralErrorElement(M.NotificationRepository notifications,
-                           {String message: '', RenderingQueue queue}) {
+      {String message: '', RenderingQueue queue}) {
     assert(notifications != null);
     assert(message != null);
     GeneralErrorElement e = document.createElement(tag.name);
     e._r = new RenderingScheduler(e, queue: queue);
     e._message = message;
     e._notifications = notifications;
     return e;
   }
 
   GeneralErrorElement.created() : super.created();
@@ skipping 10 matching lines @@
     children = [];
     _r.disable(notify: true);
   }
 
   void render() {
     children = [
       navBar([
         new NavTopMenuElement(queue: _r.queue),
         new NavNotifyElement(_notifications, queue: _r.queue)
       ]),
-      new DivElement()..classes = ['content-centered']
+      new DivElement()
+        ..classes = ['content-centered']
         ..children = [
           new HeadingElement.h1()..text = 'Error',
           new BRElement(),
-          new DivElement()..classes = ['well']
+          new DivElement()
+            ..classes = ['well']
             ..text = message
         ]
     ];
   }
 }