Cleanup element normalization logic

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 2256 matching lines @@
     static inline int SizeOf(Map* map, HeapObject* object);
   };
 
   Context* GetCreationContext();
 
   // Enqueue change record for Object.observe. May cause GC.
   MUST_USE_RESULT static MaybeHandle<Object> EnqueueChangeRecord(
       Handle<JSObject> object, const char* type, Handle<Name> name,
       Handle<Object> old_value);
 
-  // Gets the current elements capacity and the number of used elements.
-  void GetElementsCapacityAndUsage(int* capacity, int* used);
+  // Gets the number of currently used elements.
+  int GetFastElementsUsage();
 
   // Deletes an existing named property in a normalized object.
   static void DeleteNormalizedProperty(Handle<JSObject> object,
                                        Handle<Name> name, int entry);
 
  private:
   friend class JSReceiver;
   friend class Object;
 
   static void MigrateFastToFast(Handle<JSObject> object, Handle<Map> new_map);
@@ skipping 34 matching lines @@
   // the inline-stored identity hash.
   static Handle<Object> SetHiddenPropertiesHashTable(
       Handle<JSObject> object,
       Handle<Object> value);
 
   MUST_USE_RESULT Object* GetIdentityHash();
 
   static Handle<Smi> GetOrCreateIdentityHash(Handle<JSObject> object);
 
   static Handle<SeededNumberDictionary> GetNormalizedElementDictionary(
-      Handle<JSObject> object);
+      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 MaybeHandle<Object> PreventExtensionsWithTransition(
       Handle<JSObject> object);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSObject);
 };
 
@@ skipping 8443 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_