Move elements normalization to the ElementsAccessor

src/objects.h

 // Copyright 2015 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/assert-scope.h"
@@ skipping 2523 matching lines @@
   // the inline-stored identity hash.
   static Handle<Object> SetHiddenPropertiesHashTable(
       Handle<JSObject> object,
       Handle<Object> value);
 
   static Handle<Object> GetIdentityHash(Isolate* isolate,
                                         Handle<JSObject> object);
 
   static Handle<Smi> GetOrCreateIdentityHash(Handle<JSObject> object);
 
-  static Handle<SeededNumberDictionary> GetNormalizedElementDictionary(
-      Handle<JSObject> object, Handle<FixedArrayBase> elements);
-
   // Helper for fast versions of preventExtensions, seal, and freeze.
   // attrs is one of NONE, SEALED, or FROZEN (depending on the operation).
   template <PropertyAttributes attrs>
   MUST_USE_RESULT static Maybe<bool> PreventExtensionsWithTransition(
       Handle<JSObject> object, ShouldThrow should_throw);
 
   MUST_USE_RESULT static Maybe<bool> SetPrototypeUnobserved(
       Handle<JSObject> object, Handle<Object> value, bool from_javascript,
       ShouldThrow should_throw);
 
@@ skipping 8331 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_