[runtime] Use PropertyKind/PropertyLocation instead of PropertyType.

src/keys.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/keys.h"
 
 #include "src/api-arguments.h"
 #include "src/elements.h"
 #include "src/factory.h"
 #include "src/identity-map.h"
@@ skipping 310 matching lines @@
   int size = map->NumberOfOwnDescriptors();
   int index = 0;
 
   for (int i = 0; i < size; i++) {
     PropertyDetails details = descs->GetDetails(i);
     if (details.IsDontEnum()) continue;
     Object* key = descs->GetKey(i);
     if (key->IsSymbol()) continue;
     storage->set(index, key);
     if (!indices.is_null()) {
-      if (details.type() != DATA) {
-        indices = Handle<FixedArray>();
-      } else {
+      if (details.location() == kField) {
+        DCHECK_EQ(kData, details.kind());
         FieldIndex field_index = FieldIndex::ForDescriptor(*map, i);
         int load_by_field_index = field_index.GetLoadByFieldIndex();
         indices->set(index, Smi::FromInt(load_by_field_index));
+      } else {
+        indices = Handle<FixedArray>();
       }
     }
     index++;
   }
   DCHECK(index == storage->length());
 
   DescriptorArray::SetEnumCache(descs, isolate, storage, indices);
   if (cache_enum_length) {
     map->SetEnumLength(own_property_count);
   }
@@ skipping 515 matching lines @@
       isolate_, keys,
       KeyAccumulator::GetKeys(target, KeyCollectionMode::kOwnOnly, filter_,
                               GetKeysConversion::kConvertToString, is_for_in_),
       Nothing<bool>());
   Maybe<bool> result = AddKeysFromJSProxy(proxy, keys);
   return result;
 }
 
 }  // namespace internal
 }  // namespace v8