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

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 6978 matching lines @@
           i::Object::GetPropertyOrElement(registry, part).ToHandleChecked());
   i::Handle<i::Object> symbol =
       i::Object::GetPropertyOrElement(symbols, name).ToHandleChecked();
   if (!symbol->IsSymbol()) {
     DCHECK(symbol->IsUndefined());
     if (private_symbol)
       symbol = isolate->factory()->NewPrivateSymbol();
     else
       symbol = isolate->factory()->NewSymbol();
     i::Handle<i::Symbol>::cast(symbol)->set_name(*name);
-    i::JSObject::SetProperty(symbols, name, symbol, i::STRICT).Assert();
+    i::Object::SetPropertyOrElement(symbols, name, symbol, i::STRICT).Assert();
   }
   return i::Handle<i::Symbol>::cast(symbol);
 }
 
 
 Local<Symbol> v8::Symbol::For(Isolate* isolate, Local<String> name) {
   i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
   i::Handle<i::String> i_name = Utils::OpenHandle(*name);
   i::Handle<i::String> part = i_isolate->factory()->for_string();
   return Utils::ToLocal(SymbolFor(i_isolate, i_name, part, false));
@@ skipping 1824 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