[es6] silence access-check failure for well-known symbol properties

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 874c775180de335ef7d8b816dc469e0a3699ece9..96d2b54f4e00c02f5cc48b2a3d4f3f98446ac7c5 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -127,8 +127,9 @@ bool Object::IsPromise(Handle<Object> object) {
 }
 
 
-MaybeHandle<Object> Object::GetProperty(LookupIterator* it,
-                                        LanguageMode language_mode) {
+MaybeHandle<Object> Object::GetPropertyInternal(LookupIterator* it,
+                                                bool* failedAccessCheck,
+                                                LanguageMode language_mode) {
   for (; it->IsFound(); it->Next()) {
     switch (it->state()) {
       case LookupIterator::NOT_FOUND:
@@ -148,7 +149,8 @@ MaybeHandle<Object> Object::GetProperty(LookupIterator* it,
       }
       case LookupIterator::ACCESS_CHECK:
         if (it->HasAccess()) break;
-        return JSObject::GetPropertyWithFailedAccessCheck(it);
+        *failedAccessCheck = true;
+        return MaybeHandle<Object>();
       case LookupIterator::ACCESSOR:
         return GetPropertyWithAccessor(it, language_mode);
       case LookupIterator::INTEGER_INDEXED_EXOTIC: