Handlify JSObject::FastPropertyAt.

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 1493 matching lines @@
     } else if (FLAG_track_double_fields && representation.IsDouble()) {
       return IsNumber();
     } else if (FLAG_track_heap_object_fields && representation.IsHeapObject()) {
       return IsHeapObject();
     }
     return true;
   }
 
   Handle<HeapType> OptimalType(Isolate* isolate, Representation representation);
 
-  inline MaybeObject* AllocateNewStorageFor(Heap* heap,
-                                            Representation representation);
+  inline static Handle<Object> NewStorageFor(Isolate* isolate,
+                                             Handle<Object> object,
+                                             Representation representation);
 
   // Returns true if the object is of the correct type to be used as a
   // implementation of a JSObject's elements.
   inline bool HasValidElements();
 
   inline bool HasSpecificClassOf(String* name);
 
   MUST_USE_RESULT MaybeObject* ToObject(Isolate* isolate);  // ECMA-262 9.9.
   bool BooleanValue();                                      // ECMA-262 9.2.
 
@@ skipping 1075 matching lines @@
   // Convert and update the elements backing store to be a
   // SeededNumberDictionary dictionary.  Returns the backing after conversion.
   static Handle<SeededNumberDictionary> NormalizeElements(
       Handle<JSObject> object);
 
   // 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);
   static Handle<Object> FastPropertyAt(Handle<JSObject> object,
                                        Representation representation,
                                        int index);
   inline Object* RawFastPropertyAt(int index);
   inline void FastPropertyAtPut(int index, Object* value);
 
   // Access to in object properties.
   inline int GetInObjectPropertyOffset(int index);
   inline Object* InObjectPropertyAt(int index);
   inline Object* InObjectPropertyAtPut(int index,
@@ skipping 8433 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_