Add optional data parameter to SetAccessCheckCallback

src/api.cc

 // 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.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 1434 matching lines @@
 void ObjectTemplate::MarkAsUndetectable() {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ENTER_V8(isolate);
   i::HandleScope scope(isolate);
   auto cons = EnsureConstructor(isolate, this);
   EnsureNotInstantiated(cons, "v8::ObjectTemplate::MarkAsUndetectable");
   cons->set_undetectable(true);
 }
 
 
-void ObjectTemplate::SetAccessCheckCallback(AccessCheckCallback callback) {
+void ObjectTemplate::SetAccessCheckCallback(AccessCheckCallback callback,
+                                            Local<Value> data) {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ENTER_V8(isolate);
   i::HandleScope scope(isolate);
   auto cons = EnsureConstructor(isolate, this);
   EnsureNotInstantiated(cons, "v8::ObjectTemplate::SetAccessCheckCallback");
 
   i::Handle<i::Struct> struct_info =
       isolate->factory()->NewStruct(i::ACCESS_CHECK_INFO_TYPE);
   i::Handle<i::AccessCheckInfo> info =
       i::Handle<i::AccessCheckInfo>::cast(struct_info);
 
   SET_FIELD_WRAPPED(info, set_callback, callback);
   SET_FIELD_WRAPPED(info, set_named_callback, nullptr);
   SET_FIELD_WRAPPED(info, set_indexed_callback, nullptr);
 
-  info->set_data(*isolate->factory()->undefined_value());
+  if (data.IsEmpty()) {
+    data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
+  }
+  info->set_data(*Utils::OpenHandle(*data));
 
   cons->set_access_check_info(*info);
   cons->set_needs_access_check(true);
 }
 
 
 void ObjectTemplate::SetAccessCheckCallbacks(
     NamedSecurityCallback named_callback,
     IndexedSecurityCallback indexed_callback, Local<Value> data) {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
@@ skipping 6967 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8