Add a native data property that replaces itself with a real data property

include/v8.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.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 4668 matching lines @@
       AccessControl settings = DEFAULT);
   void SetNativeDataProperty(
       Local<Name> name, AccessorNameGetterCallback getter,
       AccessorNameSetterCallback setter = 0,
       // TODO(dcarney): gcc can't handle Local below
       Local<Value> data = Local<Value>(), PropertyAttribute attribute = None,
       Local<AccessorSignature> signature = Local<AccessorSignature>(),
       AccessControl settings = DEFAULT);
 
   /**
+   * Like SetNativeDataProperty, but V8 will replace the native data property
+   * with a real data property on first access.
+   */
+  void SetLazyDataProperty(Local<Name> name, AccessorNameGetterCallback getter,
+                           Local<Value> data = Local<Value>(),
+                           PropertyAttribute attribute = None);
+
+  /**
    * During template instantiation, sets the value with the intrinsic property
    * from the correct context.
    */
   void SetIntrinsicDataProperty(Local<Name> name, Intrinsic intrinsic,
                                 PropertyAttribute attribute = None);
 
  private:
   Template();
 
   friend class ObjectTemplate;
@@ skipping 4968 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_