Use the LookupIterator to transition to elements accessors

src/objects.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_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 2301 matching lines @@
 
   static bool CanSetCallback(Handle<JSObject> object, Handle<Name> name);
   static void SetElementCallback(Handle<JSObject> object,
                                  uint32_t index,
                                  Handle<Object> structure,
                                  PropertyAttributes attributes);
   static void SetPropertyCallback(Handle<JSObject> object,
                                   Handle<Name> name,
                                   Handle<Object> structure,
                                   PropertyAttributes attributes);
-  static void DefineElementAccessor(Handle<JSObject> object,
-                                    uint32_t index,
-                                    Handle<Object> getter,
-                                    Handle<Object> setter,
-                                    PropertyAttributes attributes);
 
   // Return the hash table backing store or the inline stored identity hash,
   // whatever is found.
   MUST_USE_RESULT Object* GetHiddenPropertiesHashTable();
 
   // Return the hash table backing store for hidden properties.  If there is no
   // backing store, allocate one.
   static Handle<ObjectHashTable> GetOrCreateHiddenPropertiesHashtable(
       Handle<JSObject> object);
 
@@ skipping 8471 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_