Allow for creating Private API symbols that have a number as an ID

src/objects-inl.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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 7016 matching lines @@
   return Nothing<bool>();
 }
 
 MaybeHandle<Object> Object::GetPropertyOrElement(Handle<Object> object,
                                                  Handle<Name> name) {
   LookupIterator it =
       LookupIterator::PropertyOrElement(name->GetIsolate(), object, name);
   return GetProperty(&it);
 }
 
+MaybeHandle<Object> Object::SetPropertyOrElement(Handle<Object> object,
+                                                 Handle<Name> name,
+                                                 Handle<Object> value,
+                                                 LanguageMode language_mode,
+                                                 StoreFromKeyed store_mode) {
+  LookupIterator it =
+      LookupIterator::PropertyOrElement(name->GetIsolate(), object, name);
+  MAYBE_RETURN_NULL(SetProperty(&it, value, language_mode, store_mode));
+  return value;
+}
+
 MaybeHandle<Object> Object::GetPropertyOrElement(Handle<Object> receiver,
                                                  Handle<Name> name,
                                                  Handle<JSReceiver> holder) {
   LookupIterator it = LookupIterator::PropertyOrElement(
       name->GetIsolate(), receiver, name, holder);
   return GetProperty(&it);
 }
 
 
 void JSReceiver::initialize_properties() {
@@ skipping 760 matching lines @@
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_INL_H_