Avoid converting key to string for deleting of elements

src/runtime/runtime.h

Index: src/runtime/runtime.h
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index 53ef36514d4a646b4c3b051b15f23c84573141ac..37d98603ba21d4b3186a4bc0ab6ed4e6983e74a2 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -822,6 +822,10 @@ class Runtime : public AllStatic {
       Isolate* isolate, Handle<Object> object, uint32_t index,
       LanguageMode language_mode = SLOPPY);
 
+  MUST_USE_RESULT static MaybeHandle<Object> DeleteObjectProperty(
+      Isolate* isolate, Handle<JSReceiver> receiver, Handle<Object> key,
+      LanguageMode language_mode);
+
   MUST_USE_RESULT static MaybeHandle<Object> SetObjectProperty(
       Isolate* isolate, Handle<Object> object, Handle<Object> key,
       Handle<Object> value, LanguageMode language_mode);