{ rv = NS_OK; }
rv = frame->Scrolled(aView);
NS_IMETHODIMP PresShell :: Scrolled(nsIView *aView){  void*     clientData;  nsIFrame* frame;  nsresult  rv;    NS_ASSERTION(!(nsnull == aView), "null view");  aView->GetClientData(clientData);  frame = (nsIFrame *)clientData;  if (nsnull != frame)  {    rv = NS_OK;  }  else    rv = NS_OK;  return rv;}