Rewrite DeleteProperty using the LookupIterator

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 "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/builtins.h"
@@ skipping 2689 matching lines @@
                               PropertyAttributes attributes);
 
   MUST_USE_RESULT static MaybeHandle<Object> DeleteProperty(
       Handle<JSObject> object,
       Handle<Name> name,
       DeleteMode mode);
   static Handle<Object> DeletePropertyPostInterceptor(Handle<JSObject> object,
                                                       Handle<Name> name,
                                                       DeleteMode mode);
   MUST_USE_RESULT static MaybeHandle<Object> DeletePropertyWithInterceptor(
-      Handle<JSObject> object,
-      Handle<Name> name);
+      Handle<JSObject> object, Handle<JSObject> receiver, Handle<Name> name);

[Jakob Kummerow, 2014/08/13 12:07:25]

nit: please use matching names in declaration and definition, i.e.
s/object/holder/

 
   // Deletes the named property in a normalized object.
   static Handle<Object> DeleteNormalizedProperty(Handle<JSObject> object,
                                                  Handle<Name> name,
                                                  DeleteMode mode);
 
   MUST_USE_RESULT static MaybeHandle<Object> DeleteElement(
       Handle<JSObject> object,
       uint32_t index,
       DeleteMode mode);
@@ skipping 8507 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_