Reland of r20146 "JSObject::NormalizeElements() handlified."

src/objects.h

 // 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 2590 matching lines @@
   // an initial capacity for holding these properties.
   static void NormalizeProperties(Handle<JSObject> object,
                                   PropertyNormalizationMode mode,
                                   int expected_additional_properties);
 
   // Convert and update the elements backing store to be a
   // SeededNumberDictionary dictionary.  Returns the backing after conversion.
   static Handle<SeededNumberDictionary> NormalizeElements(
       Handle<JSObject> object);
 
-  MUST_USE_RESULT MaybeObject* NormalizeElements();
-
   // Transform slow named properties to fast variants.
   static void TransformToFastProperties(Handle<JSObject> object,
                                         int unused_property_fields);
 
   // Access fast-case object properties at index.
   MUST_USE_RESULT inline MaybeObject* FastPropertyAt(
       Representation representation,
       int index);
   inline Object* RawFastPropertyAt(int index);
   inline void FastPropertyAtPut(int index, Object* value);
@@ skipping 8178 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_