Introduce IsUndefined(Isolate*) and IsTheHole(Isolate*)

src/heap/objects-visiting-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_VISITING_INL_H_
 #define V8_OBJECTS_VISITING_INL_H_
 
 #include "src/heap/array-buffer-tracker.h"
 #include "src/heap/objects-visiting.h"
 #include "src/ic/ic-state.h"
@@ skipping 367 matching lines @@
   if (array->HasPrototypeTransitions()) {
     StaticVisitor::VisitPointer(heap, array,
                                 array->GetPrototypeTransitionsSlot());
   }
   int num_transitions = TransitionArray::NumberOfTransitions(array);
   for (int i = 0; i < num_transitions; ++i) {
     StaticVisitor::VisitPointer(heap, array, array->GetKeySlot(i));
   }
   // Enqueue the array in linked list of encountered transition arrays if it is
   // not already in the list.
-  if (array->next_link()->IsUndefined()) {
+  if (array->next_link()->IsUndefined(heap->isolate())) {
     Heap* heap = map->GetHeap();
     array->set_next_link(heap->encountered_transition_arrays(),
                          UPDATE_WEAK_WRITE_BARRIER);
     heap->set_encountered_transition_arrays(array);
   }
 }
 
 
 template <typename StaticVisitor>
 void StaticMarkingVisitor<StaticVisitor>::VisitAllocationSite(
@@ skipping 333 matching lines @@
   typedef FlexibleBodyVisitor<StaticVisitor, JSFunction::BodyDescriptorWeakCode,
                               void> JSFunctionWeakCodeBodyVisitor;
   JSFunctionWeakCodeBodyVisitor::Visit(map, object);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_VISITING_INL_H_