Provide accessor for object internal properties that doesn't require debugger to be active

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 9512a9c0d1eee1a4766493a3b8d2840890363376..40700caf5044efac23f0d43a275ccd0675f9fe8b 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1597,6 +1597,7 @@ void Genesis::InstallNativeFunctions() {
                  to_complete_property_descriptor);
 
   INSTALL_NATIVE(Symbol, "$promiseStatus", promise_status);
+  INSTALL_NATIVE(Symbol, "$promiseValue", promise_value);
   INSTALL_NATIVE(JSFunction, "$promiseCreate", promise_create);
   INSTALL_NATIVE(JSFunction, "$promiseResolve", promise_resolve);
   INSTALL_NATIVE(JSFunction, "$promiseReject", promise_reject);