Transition array should not know about write barrier internals.

src/transitions-inl.h

Index: src/transitions-inl.h
diff --git a/src/transitions-inl.h b/src/transitions-inl.h
index a5ec52f66730a131a8e5e3a58ecda049f77c9b0c..6f301a7ea2741cd3bec4cf92615336aafe6062ba 100644
--- a/src/transitions-inl.h
+++ b/src/transitions-inl.h
@@ -158,13 +158,9 @@ PropertyDetails TransitionArray::GetTargetDetails(Name* name, Map* target) {
 }
 
 
-void TransitionArray::NoIncrementalWriteBarrierSet(int transition_number,
-                                                   Name* key,
-                                                   Map* target) {
-  FixedArray::NoIncrementalWriteBarrierSet(
-      this, ToKeyIndex(transition_number), key);
-  FixedArray::NoIncrementalWriteBarrierSet(
-      this, ToTargetIndex(transition_number), target);
+void TransitionArray::Set(int transition_number, Name* key, Map* target) {
+  set(ToKeyIndex(transition_number), key);
+  set(ToTargetIndex(transition_number), target);
 }