The deferred handes list belongs to the Isolate and not to the

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 8b4e12bc0d38aea0acf9498e49258c7c0964995e..e05be9d73c33062c6f9db2163d5a885dbb38c95c 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -1055,6 +1055,8 @@ class Isolate {
     date_cache_ = date_cache;
   }
 
+  void IterateDeferredHandles(ObjectVisitor* visitor);
+
  private:
   Isolate();
 
@@ -1173,6 +1175,8 @@ class Isolate {
   // the Error object.
   bool IsErrorObject(Handle<Object> obj);
 
+  void DestroyDeferredHandles(DeferredHandles* deferred);
+
   EntryStackItem* entry_stack_;
   int stack_trace_nesting_level_;
   StringStream* incomplete_message_;
@@ -1278,6 +1282,9 @@ class Isolate {
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
+  DeferredHandles* deferred_handles_head_;
+
+  friend class DeferredHandles;

[danno, 2012/07/18 13:36:17]

No friend in this direction.

[sanjoy, 2012/07/18 14:00:44]

Done.

   friend class ExecutionAccess;
   friend class IsolateInitializer;
   friend class ThreadManager;