Revert of Introduce instance type for transition arrays.

src/heap/objects-visiting-inl.h

Index: src/heap/objects-visiting-inl.h
diff --git a/src/heap/objects-visiting-inl.h b/src/heap/objects-visiting-inl.h
index 2d03c125eb15942110ff192586d4c20e26d4c36a..b6c72185c65d54a558396debb1de11c5d3b18320 100644
--- a/src/heap/objects-visiting-inl.h
+++ b/src/heap/objects-visiting-inl.h
@@ -178,8 +178,6 @@
   table_.Register(kVisitPropertyCell, &VisitPropertyCell);
 
   table_.Register(kVisitWeakCell, &VisitWeakCell);
-
-  table_.Register(kVisitTransitionArray, &VisitTransitionArray);
 
   table_.template RegisterSpecializations<DataObjectVisitor, kVisitDataObject,
                                           kVisitDataObjectGeneric>();
@@ -344,25 +342,6 @@
 
 
 template <typename StaticVisitor>
-void StaticMarkingVisitor<StaticVisitor>::VisitTransitionArray(
-    Map* map, HeapObject* object) {
-  typedef FlexibleBodyVisitor<StaticVisitor, TransitionArray::BodyDescriptor,
-                              int> TransitionArrayBodyVisitor;
-  TransitionArray* array = TransitionArray::cast(object);
-  // Enqueue the array in linked list of encountered transition arrays if it is
-  // not already in the list.
-  if (array->next_link()->IsUndefined()) {
-    Heap* heap = map->GetHeap();
-    array->set_next_link(heap->encountered_transition_arrays(),
-                         UPDATE_WEAK_WRITE_BARRIER);
-    heap->set_encountered_transition_arrays(array);
-  }
-  // TODO(ulan): Move MarkTransitionArray logic here.
-  TransitionArrayBodyVisitor::Visit(map, object);
-}
-
-
-template <typename StaticVisitor>
 void StaticMarkingVisitor<StaticVisitor>::VisitAllocationSite(
     Map* map, HeapObject* object) {
   Heap* heap = map->GetHeap();