[promises] Refactor debug code

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 094ada8ecbd976fb9d68b9fa66edc20c6f044abb..0aafa62b20014e631de22dfcc95eecb5e1892616 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -1013,9 +1013,8 @@ Handle<Struct> Factory::NewStruct(InstanceType type) {
 
 Handle<PromiseResolveThenableJobInfo> Factory::NewPromiseResolveThenableJobInfo(
     Handle<JSReceiver> thenable, Handle<JSReceiver> then,
-    Handle<JSFunction> resolve, Handle<JSFunction> reject,
-    Handle<Object> debug_id, Handle<Object> debug_name,
-    Handle<Context> context) {
+    Handle<JSFunction> resolve, Handle<JSFunction> reject, int debug_id,
+    int debug_name, Handle<Context> context) {
   Handle<PromiseResolveThenableJobInfo> result =
       Handle<PromiseResolveThenableJobInfo>::cast(
           NewStruct(PROMISE_RESOLVE_THENABLE_JOB_INFO_TYPE));
@@ -1023,8 +1022,8 @@ Handle<PromiseResolveThenableJobInfo> Factory::NewPromiseResolveThenableJobInfo(
   result->set_then(*then);
   result->set_resolve(*resolve);
   result->set_reject(*reject);
-  result->set_debug_id(*debug_id);
-  result->set_debug_name(*debug_name);
+  result->set_debug_id(debug_id);
+  result->set_debug_name(debug_name);
   result->set_context(*context);
   return result;
 }
@@ -1041,8 +1040,8 @@ Handle<PromiseReactionJobInfo> Factory::NewPromiseReactionJobInfo(
   result->set_deferred_promise(*deferred_promise);
   result->set_deferred_on_resolve(*deferred_on_resolve);
   result->set_deferred_on_reject(*deferred_on_reject);
-  result->set_debug_id(isolate()->heap()->undefined_value());
-  result->set_debug_name(isolate()->heap()->undefined_value());
+  result->set_debug_id(kDebugPromiseFirstID);
+  result->set_debug_name(kDebugNotActive);
   result->set_context(*context);
   return result;
 }