Let the callers of V8::ContextDisposedNoticication() know...

include/v8.h

 // Copyright 2007-2009 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 2489 matching lines @@
   static bool IdleNotification();
 
   /**
    * Optional notification that the system is running low on memory.
    * V8 uses these notifications to attempt to free memory.
    */
   static void LowMemoryNotification();
 
   /**
    * Optional notification that a context has been disposed. V8 uses
-   * these notifications to guide the garbage collection heuristic.
+   * these notifications to guide the GC heuristic. Returns the number
+   * of context disposals - including this one - since the last time
+   * V8 had a chance to clean up.
    */
-  static void ContextDisposedNotification();
+  static int ContextDisposedNotification();
 
  private:
   V8();
 
   static internal::Object** GlobalizeReference(internal::Object** handle);
   static void DisposeGlobal(internal::Object** global_handle);
   static void MakeWeak(internal::Object** global_handle,
                        void* data,
                        WeakReferenceCallback);
   static void ClearWeak(internal::Object** global_handle);
@@ skipping 790 matching lines @@
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef V8EXPORT_INLINE
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_