Recfactor core HasElement functionality into ElementsAccessors

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 2b8888b9ef324fb84d143ab9eef2e6cde59c0cdb..3b0443cdb3b99f37d15e30efc78877078472c49c 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -1752,7 +1752,6 @@ 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,
@@ -2152,9 +2151,6 @@ 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();