Remove obsolete unchecked accessors in JSFunction.

src/mark-compact.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1301 matching lines @@
   //   object->IsConsString() && !object->IsInternalizedString() &&
   //   (ConsString::cast(object)->second() == HEAP->empty_string())
   // except the maps for the object and its possible substrings might be
   // marked.
   HeapObject* object = HeapObject::cast(*p);
   if (!FLAG_clever_optimizations) return object;
   Map* map = object->map();
   InstanceType type = map->instance_type();
   if ((type & kShortcutTypeMask) != kShortcutTypeTag) return object;
 
-  Object* second = reinterpret_cast<ConsString*>(object)->unchecked_second();
+  Object* second = reinterpret_cast<ConsString*>(object)->second();
   Heap* heap = map->GetHeap();
   if (second != heap->empty_string()) {
     return object;
   }
 
   // Since we don't have the object's start, it is impossible to update the
   // page dirty marks. Therefore, we only replace the string with its left
   // substring when page dirty marks do not change.
-  Object* first = reinterpret_cast<ConsString*>(object)->unchecked_first();
+  Object* first = reinterpret_cast<ConsString*>(object)->first();
   if (!heap->InNewSpace(object) && heap->InNewSpace(first)) return object;
 
   *p = first;
   return HeapObject::cast(first);
 }
 
 
 class MarkCompactMarkingVisitor
     : public StaticMarkingVisitor<MarkCompactMarkingVisitor> {
  public:
@@ skipping 2953 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal