More details printed for Map, DescriptorArray and TransitionArray.

src/transitions-inl.h

Index: src/transitions-inl.h
diff --git a/src/transitions-inl.h b/src/transitions-inl.h
index a16eb4477cd60c1486ed5b697f257d619d9e1b05..cc4d4b11d4165bac0ebab6d06317f8e902566ba5 100644
--- a/src/transitions-inl.h
+++ b/src/transitions-inl.h
@@ -134,6 +134,12 @@ PropertyDetails TransitionArray::GetTargetDetails(int transition_number) {
 }
 
 
+Object* TransitionArray::GetTargetValue(int transition_number) {
+  Map* map = GetTarget(transition_number);
+  return map->instance_descriptors()->GetValue(map->LastAdded());
+}
+
+
 int TransitionArray::Search(Name* name) {
   if (IsSimpleTransition()) {
     Name* key = GetKey(kSimpleTransitionIndex);