Add expandable instances and lists to the vm service.

runtime/bin/vmservice/client/lib/src/observatory/request_manager.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.
 
 part of observatory;
 
 /// A request response interceptor is called for each response.
 typedef void RequestResponseInterceptor();
 
 abstract class RequestManager extends Observable {
@@ skipping 215 matching lines @@
     request(requestString).then((responseString) {
       parseResponses(responseString);
     }).catchError(_requestCatchError);
   }
 
   /// Abstract method. Given the [requestString], return a String in the
   /// future which contains the reply from the VM service.
   Future<String> request(String requestString);
 
   Future<Map> requestMap(String requestString) {
+    if (requestString.startsWith('#')) {
+      requestString = requestString.substring(1);
+    }
     return request(requestString).then((response) {
       try {
         var m = JSON.decode(response);
         return m;
       } catch (e) { }
       return null;
     });
   }
 }
 
@@ skipping 37 matching lines @@
     message['query'] = requestString;
     _requestSerial++;
 
     var completer = new Completer();
     _outstandingRequests[idString] = completer;
 
     window.parent.postMessage(JSON.encode(message), '*');
     return completer.future;
   }
 }