Converted Observatory object-common element

runtime/observatory/lib/src/models/objects/retaining_path.dart

Index: runtime/observatory/lib/src/models/objects/retaining_path.dart
diff --git a/runtime/observatory/lib/src/models/objects/bound_field.dart b/runtime/observatory/lib/src/models/objects/retaining_path.dart
similarity index 50%
copy from runtime/observatory/lib/src/models/objects/bound_field.dart
copy to runtime/observatory/lib/src/models/objects/retaining_path.dart
index cf2a38f632d72081cce25e080ff1f4ca2a1b34ba..24827ebc329dad66567b10c8fdc82fbe984555bd 100644
--- a/runtime/observatory/lib/src/models/objects/bound_field.dart
+++ b/runtime/observatory/lib/src/models/objects/retaining_path.dart
@@ -4,7 +4,16 @@
 
 part of models;
 
-abstract class BoundField {
-  FieldRef get decl;
-  Guarded<InstanceRef> get value;
+abstract class RetainingPath {
+  Iterable<RetainingPathItem> get elements;
+}
+
+abstract class RetainingPathItem {
+  ObjectRef get source;
+  /// [optional]
+  InstanceRef get parentField;
+  /// [optional]
+  int get parentListIndex;
+  /// [optional]
+  int get parentWordOffset;
 }