Revert of [runtime] Migrate Object.getOwnPropertyNames to C++.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index baa1c6c38a25e9a5b58c093d76eb95d18768eb36..6d6e816f53134a3f03ad590c195648a5881fa5bd 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -1590,11 +1590,8 @@
 }
 
 
-namespace {
-
-Object* GetOwnPropertyKeys(Isolate* isolate,
-                           BuiltinArguments<BuiltinExtraArguments::kNone> args,
-                           PropertyFilter filter) {
+// ES6 section 19.1.2.8 Object.getOwnPropertySymbols ( O )
+BUILTIN(ObjectGetOwnPropertySymbols) {
   HandleScope scope(isolate);
   Handle<Object> object = args.atOrUndefined(isolate, 1);
   Handle<JSReceiver> receiver;
@@ -1602,23 +1599,9 @@
                                      Object::ToObject(isolate, object));
   Handle<FixedArray> keys;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, keys, JSReceiver::GetKeys(receiver, JSReceiver::OWN_ONLY, filter,
-                                         CONVERT_TO_STRING));
+      isolate, keys, JSReceiver::GetKeys(receiver, JSReceiver::OWN_ONLY,
+                                         SKIP_STRINGS, CONVERT_TO_STRING));
   return *isolate->factory()->NewJSArrayWithElements(keys);
-}
-
-}  // namespace
-
-
-// ES6 section 19.1.2.7 Object.getOwnPropertyNames ( O )
-BUILTIN(ObjectGetOwnPropertyNames) {
-  return GetOwnPropertyKeys(isolate, args, SKIP_SYMBOLS);
-}
-
-
-// ES6 section 19.1.2.8 Object.getOwnPropertySymbols ( O )
-BUILTIN(ObjectGetOwnPropertySymbols) {
-  return GetOwnPropertyKeys(isolate, args, SKIP_STRINGS);
 }