FlushPendingNotifications();
FlushPendingNotifications(PR_FALSE);
PresShell::HandlePostedReflowCallbacks(){   PRBool shouldFlush = PR_FALSE;   nsCallbackEventRequest* node = mFirstCallbackEventRequest;   while(node)   {      nsIReflowCallback* callback = node->callback;      nsCallbackEventRequest* toFree = node;      node = node->next;      mFirstCallbackEventRequest = node;      FreeFrame(sizeof(nsCallbackEventRequest), toFree);	  if (callback)        callback->ReflowFinished(this, &shouldFlush);      NS_IF_RELEASE(callback);   }   mFirstCallbackEventRequest = mLastCallbackEventRequest = nsnull;   if (shouldFlush)     FlushPendingNotifications();}