Converted Observatory class-tree element

runtime/observatory/lib/src/service/object.dart

Index: runtime/observatory/lib/src/service/object.dart
diff --git a/runtime/observatory/lib/src/service/object.dart b/runtime/observatory/lib/src/service/object.dart
index dadf631777f1efadaa2d00e4c34c556d39757625..2b2ad7cab836211c00e0c71b46a2df950982c650 100644
--- a/runtime/observatory/lib/src/service/object.dart
+++ b/runtime/observatory/lib/src/service/object.dart
@@ -2252,7 +2252,7 @@ class Allocations {
   bool get empty => accumulated.empty && current.empty;
 }
 
-class Class extends HeapObject implements M.ClassRef {
+class Class extends HeapObject implements M.Class {
   @observable Library library;
 
   @observable bool isAbstract;
@@ -2390,7 +2390,7 @@ class Class extends HeapObject implements M.ClassRef {
   String toString() => 'Class($vmName)';
 }
 
-class Instance extends HeapObject implements M.InstanceRef {
+class Instance extends HeapObject implements M.Instance {
   @observable String kind;
   @observable String valueAsString;  // If primitive.
   @observable bool valueAsStringIsTruncated;