Restore CHECK_DERIVED_PROPERTY

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/491873002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23236 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/api.cc

@@ -3600,7 +3600,8 @@ Local<Value> v8::Object::GetRealNamedProperty(Handle<String> key) {
   ENTER_V8(isolate);
   i::Handle<i::JSObject> self_obj = Utils::OpenHandle(this);
   i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
-  i::LookupIterator it(self_obj, key_obj, i::LookupIterator::CHECK_PROPERTY);
+  i::LookupIterator it(self_obj, key_obj,
+                       i::LookupIterator::CHECK_DERIVED_PROPERTY);
   return GetPropertyByLookup(&it);
 }