Use dartfmt on Observatory code

runtime/observatory/lib/src/elements/objectpool_ref.dart

Index: runtime/observatory/lib/src/elements/objectpool_ref.dart
diff --git a/runtime/observatory/lib/src/elements/objectpool_ref.dart b/runtime/observatory/lib/src/elements/objectpool_ref.dart
index aad18b87cec24d023bd35d7aaee063de551595d3..489581c62f781d8e6647e6a093453120fa299acb 100644
--- a/runtime/observatory/lib/src/elements/objectpool_ref.dart
+++ b/runtime/observatory/lib/src/elements/objectpool_ref.dart
@@ -4,8 +4,7 @@
 
 import 'dart:html';
 import 'dart:async';
-import 'package:observatory/models.dart' as M
-  show IsolateRef, ObjectPoolRef;
+import 'package:observatory/models.dart' as M show IsolateRef, ObjectPoolRef;
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/helpers/uris.dart';
@@ -53,7 +52,8 @@ class ObjectPoolRefElement extends HtmlElement implements Renderable {
     children = [
       new AnchorElement(href: Uris.inspect(_isolate, object: _pool))
         ..children = [
-          new SpanElement()..classes = ['emphasize']
+          new SpanElement()
+            ..classes = ['emphasize']
             ..text = 'ObjectPool',
           new SpanElement()..text = ' (${_pool.length})'
         ]