Cleanup API property handling

src/objects.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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 1663 matching lines @@
   MUST_USE_RESULT static inline Maybe<bool> HasProperty(
       Handle<JSReceiver> object, Handle<Name> name);
   MUST_USE_RESULT static inline Maybe<bool> HasOwnProperty(Handle<JSReceiver>,
                                                            Handle<Name> name);
   MUST_USE_RESULT static inline Maybe<bool> HasElement(
       Handle<JSReceiver> object, uint32_t index);
   MUST_USE_RESULT static inline Maybe<bool> HasOwnElement(
       Handle<JSReceiver> object, uint32_t index);
 
   // Implementation of [[Delete]], ECMA-262 5th edition, section 8.12.7.
+  MUST_USE_RESULT static MaybeHandle<Object> DeletePropertyOrElement(
+      Handle<JSReceiver> object, Handle<Name> name,
+      LanguageMode language_mode = SLOPPY);
   MUST_USE_RESULT static MaybeHandle<Object> DeleteProperty(
       Handle<JSReceiver> object, Handle<Name> name,
       LanguageMode language_mode = SLOPPY);
   MUST_USE_RESULT static MaybeHandle<Object> DeleteProperty(
       LookupIterator* it, LanguageMode language_mode);
   MUST_USE_RESULT static MaybeHandle<Object> DeleteElement(
       Handle<JSReceiver> object, uint32_t index,
       LanguageMode language_mode = SLOPPY);
 
   // Tests for the fast common case for property enumeration.
@@ skipping 9120 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_