Recfactor core HasElement functionality into ElementsAccessors

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 482b7944644361cd50f0728cc064b5a6dcd0e5fa..a7cac583a6e784f4be4a03579b79bc3b1f34a9cd 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -1745,7 +1745,6 @@ class JSObject: public JSReceiver {
   LocalElementType HasLocalElement(uint32_t index);
 
   bool HasElementWithInterceptor(JSReceiver* receiver, uint32_t index);
-  bool HasElementPostInterceptor(JSReceiver* receiver, uint32_t index);
 
   MUST_USE_RESULT MaybeObject* SetFastElement(uint32_t index,
                                               Object* value,
@@ -2145,9 +2144,6 @@ class JSObject: public JSReceiver {
   bool ReferencesObjectFromElements(FixedArray* elements,
                                     ElementsKind kind,
                                     Object* object);
-  bool HasElementInElements(FixedArray* elements,
-                            ElementsKind kind,
-                            uint32_t index);
 
   // Returns true if most of the elements backing storage is used.
   bool HasDenseElements();