Add 'owner' field to sockets, that point to a potential IO resource using that Socket.

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

 // Copyright (c) 2013, 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 io_view_element;
 
 import 'dart:async';
 import 'observatory_element.dart';
 import 'service_ref.dart';
 import 'package:observatory/service.dart';
 import 'package:polymer/polymer.dart';
 
 @CustomTag('io-view')
 class IOViewElement extends ObservatoryElement {
   @published ServiceMap io;
 
   IOViewElement.created() : super.created();
 
   void refresh(var done) {
     io.reload().whenComplete(done);
   }
 }
 
+@CustomTag('io-ref')
+class IORefElement extends ServiceRefElement {
+  IORefElement.created() : super.created();
+}
+
 @CustomTag('io-http-server-list-view')
 class IOHttpServerListViewElement extends ObservatoryElement {
   @published ServiceMap list;
 
   IOHttpServerListViewElement.created() : super.created();
 
   void refresh(var done) {
     list.reload().whenComplete(done);
   }
 }
@@ skipping 188 matching lines @@
   }
 
   void leftView() {
     super.leftView();
     if (_updateTimer != null) {
       _updateTimer.cancel();
       _updateTimer = null;
     }
   }
 }