[cleanup] Drop JSObject::GetOwnPropertyNames().

src/property-details.h

 // Copyright 2012 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_PROPERTY_DETAILS_H_
 #define V8_PROPERTY_DETAILS_H_
 
 #include "include/v8.h"
 #include "src/allocation.h"
 #include "src/utils.h"
@@ skipping 20 matching lines @@
 
   // When creating a property, EVAL_DECLARED used to indicate that the property
   // came from a sloppy-mode direct eval, and certain checks need to be done.
   // Cannot be stored in or returned from a descriptor's attributes bitfield.
   EVAL_DECLARED = 128
 };
 
 
 enum PropertyFilter {
   ALL_PROPERTIES = 0,
+  ONLY_WRITABLE = 1,
   ONLY_ENUMERABLE = 2,
+  ONLY_CONFIGURABLE = 4,
   SKIP_STRINGS = 8,
   SKIP_SYMBOLS = 16,
   ONLY_ALL_CAN_READ = 32,
   ENUMERABLE_STRINGS = ONLY_ENUMERABLE | SKIP_SYMBOLS,
 };
 // Enable fast comparisons of PropertyAttributes against PropertyFilters.
 STATIC_ASSERT(ALL_PROPERTIES == static_cast<PropertyFilter>(NONE));
+STATIC_ASSERT(ONLY_WRITABLE == static_cast<PropertyFilter>(READ_ONLY));
 STATIC_ASSERT(ONLY_ENUMERABLE == static_cast<PropertyFilter>(DONT_ENUM));
+STATIC_ASSERT(ONLY_CONFIGURABLE == static_cast<PropertyFilter>(DONT_DELETE));
 STATIC_ASSERT(((SKIP_STRINGS | SKIP_SYMBOLS | ONLY_ALL_CAN_READ) &
                ALL_ATTRIBUTES_MASK) == 0);
 
 
 class Smi;
 template<class> class TypeImpl;
 struct ZoneTypeConfig;
 typedef TypeImpl<ZoneTypeConfig> Type;
 class TypeInfo;
 
@@ skipping 325 matching lines @@
 };
 
 
 std::ostream& operator<<(std::ostream& os,
                          const PropertyAttributes& attributes);
 std::ostream& operator<<(std::ostream& os, const PropertyDetails& details);
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PROPERTY_DETAILS_H_