Improve mark-compact object grouping interface.

include/v8.h

 // Copyright 2007-2008 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 1949 matching lines @@
    *
    * \note This is an experimental feature and it might be removed.
    */
   static void SetExternalSymbolCallback(ExternalSymbolCallback);
 
   /**
    * Allows the host application to group objects together. If one
    * object in the group is alive, all objects in the group are alive.
    * After each garbage collection, object groups are removed. It is
    * intended to be used in the before-garbage-collection callback
-   * function for istance to simulate DOM tree connections among JS
+   * function, for instance to simulate DOM tree connections among JS
    * wrapper objects.
    */
-  static void AddObjectToGroup(void* id, Persistent<Object> obj);
+  static void AddObjectGroup(Persistent<Value>* objects, size_t length);
 
   /**
    * Initializes from snapshot if possible. Otherwise, attempts to
    * initialize from scratch.
    */
   static bool Initialize();
 
   /**
    * Adjusts the amount of registered external memory.  Used to give
    * V8 an indication of the amount of externally allocated memory
@@ skipping 479 matching lines @@
 
 }  // namespace v8
 
 
 #undef EXPORT
 #undef EXPORT_INLINE
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_