Couple the enumeration index of a property to the size of the descriptor array where it first appea…

src/property.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 88 matching lines @@
 
   friend class DescriptorArray;
 };
 
 
 class FieldDescriptor: public Descriptor {
  public:
   FieldDescriptor(String* key,
                   int field_index,
                   PropertyAttributes attributes,
-                  int index)
+                  int index = 0)
       : Descriptor(key, Smi::FromInt(field_index), attributes, FIELD, index) {}
 };
 
 
 class ConstantFunctionDescriptor: public Descriptor {
  public:
   ConstantFunctionDescriptor(String* key,
                              JSFunction* function,
                              PropertyAttributes attributes,
                              int index)
       : Descriptor(key, function, attributes, CONSTANT_FUNCTION, index) {}
 };
 
 
 class CallbacksDescriptor:  public Descriptor {
  public:
   CallbacksDescriptor(String* key,
                       Object* foreign,
                       PropertyAttributes attributes,
-                      int index)
+                      int index = 0)
       : Descriptor(key, foreign, attributes, CALLBACKS, index) {}
 };
 
 
 class LookupResult BASE_EMBEDDED {
  public:
   explicit LookupResult(Isolate* isolate)
       : isolate_(isolate),
         next_(isolate->top_lookup_result()),
         lookup_type_(NOT_FOUND),
@@ skipping 266 matching lines @@
   JSReceiver* holder_;
   int number_;
   bool cacheable_;
   PropertyDetails details_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_PROPERTY_H_