[runtime] Do not use the enum-cache for non-prototype objects.

src/objects.h

 // Copyright 2015 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 2266 matching lines @@
   static inline int GetHeaderSize(InstanceType instance_type);
   inline int GetHeaderSize();
 
   static inline int GetInternalFieldCount(Map* map);
   inline int GetInternalFieldCount();
   inline int GetInternalFieldOffset(int index);
   inline Object* GetInternalField(int index);
   inline void SetInternalField(int index, Object* value);
   inline void SetInternalField(int index, Smi* value);
 
-  void CollectOwnPropertyNames(KeyAccumulator* keys,
-                               PropertyFilter filter = ALL_PROPERTIES);
-
   // Returns the number of properties on this object filtering out properties
   // with the specified attributes (ignoring interceptors).
   // TODO(jkummerow): Deprecated, only used by Object.observe.
   int NumberOfOwnElements(PropertyFilter filter);
   // Returns the number of elements on this object filtering out elements
   // with the specified attributes (ignoring interceptors).
   // TODO(jkummerow): Deprecated, only used by Object.observe.
   int GetOwnElementKeys(FixedArray* storage, PropertyFilter filter);
 
+  void CollectOwnPropertyKeys(
+      KeyAccumulator* keys, PropertyFilter filter = ALL_PROPERTIES,
+      JSReceiver::KeyCollectionType type = JSReceiver::OWN_ONLY);
+
   static void CollectOwnElementKeys(Handle<JSObject> object,
                                     KeyAccumulator* keys,
                                     PropertyFilter filter);
-
   static Handle<FixedArray> GetEnumPropertyKeys(Handle<JSObject> object,
                                                 bool cache_result);
 
   // Returns a new map with all transitions dropped from the object's current
   // map and the ElementsKind set.
   static Handle<Map> GetElementsTransitionMap(Handle<JSObject> object,
                                               ElementsKind to_kind);
   static void TransitionElementsKind(Handle<JSObject> object,
                                      ElementsKind to_kind);
 
@@ skipping 8417 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_