Add GetOwnPropertyNames method for Object in the API

include/v8.h

 // Copyright 2011 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 1447 matching lines @@
 
   /**
    * Returns an array containing the names of the enumerable properties
    * of this object, including properties from prototype objects.  The
    * array returned by this method contains the same values as would
    * be enumerated by a for-in statement over this object.
    */
   V8EXPORT Local<Array> GetPropertyNames();
 
   /**
+   * This function has the same functionality as GetPropertyNames but
+   * the returned array doesn't contain the names of properties from
+   * prototype objects.
+   */
+  V8EXPORT Local<Array> GetOwnPropertyNames();
+
+  /**
    * Get the prototype object.  This does not skip objects marked to
    * be skipped by __proto__ and it does not consult the security
    * handler.
    */
   V8EXPORT Local<Value> GetPrototype();
 
   /**
    * Set the prototype object.  This does not skip objects marked to
    * be skipped by __proto__ and it does not consult the security
    * handler.
@@ skipping 2662 matching lines @@
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_