Removed all analyzer issues from tests

runtime/observatory/lib/src/service/object.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.
 
 part of service;
 
 // Some value smaller than the object ring, so requesting a large array
 // doesn't result in an expired ref because the elements lapped it in the
 // object ring.
 const int kDefaultFieldLimit = 100;
@@ skipping 1623 matching lines @@
 
   Future setExceptionPauseMode(String mode) {
     return invokeRpc('setExceptionPauseMode', {'mode': mode});
   }
 
   Future<ServiceMap> getStack() {
     return invokeRpc('getStack', {});
   }
 
   Future<ObjectStore> getObjectStore() {
-    return invokeRpc('_getObjectStore', {}).then((map) {
+    return invokeRpcNoUpgrade('_getObjectStore', {}).then((map) {
       ObjectStore objectStore = new ObjectStore._empty(this);
       objectStore._update(map, false);
       return objectStore;
     });
   }
 
   Future<ServiceObject> _eval(ServiceObject target,
                               String expression) {
     Map params = {
       'targetId': target.id,
@@ skipping 2460 matching lines @@
     var v = list[i];
     if ((v is ObservableMap) && _isServiceMap(v)) {
       list[i] = owner.getFromMap(v);
     } else if (v is ObservableList) {
       _upgradeObservableList(v, owner);
     } else if (v is ObservableMap) {
       _upgradeObservableMap(v, owner);
     }
   }
 }