[runtime] Make sure that LookupIterator::OWN always performs a HIDDEN lookup as well.

src/runtime/runtime-debug.cc

Index: src/runtime/runtime-debug.cc
diff --git a/src/runtime/runtime-debug.cc b/src/runtime/runtime-debug.cc
index 94c2992fc2965ac022244d902803ef59390d1ce9..551ebbaf0bae7ef0da5bf891d86031d6820a5b40 100644
--- a/src/runtime/runtime-debug.cc
+++ b/src/runtime/runtime-debug.cc
@@ -358,7 +358,7 @@ RUNTIME_FUNCTION(Runtime_DebugGetPropertyDetails) {
     return *isolate->factory()->NewJSArrayWithElements(details);
   }
 
-  LookupIterator it(obj, name, LookupIterator::HIDDEN);
+  LookupIterator it(obj, name, LookupIterator::OWN);
   bool has_caught = false;
   Handle<Object> value = DebugGetProperty(&it, &has_caught);
   if (!it.IsFound()) return isolate->heap()->undefined_value();