Refactor Observatory

runtime/bin/vmservice/client/lib/src/elements/vm_element.dart

+// Copyright (c) 2014, 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 vm_element;
+
+import 'observatory_element.dart';
+import 'package:observatory/app.dart';
+import 'package:polymer/polymer.dart';
+
+/// Base class for all custom elements which reference a VM.
+/// Holds an observable [VM].
+@CustomTag('vm-element')
+class VMElement extends ObservatoryElement {
+  VMElement.created() : super.created();
+  @published VM vm;
+}