return NS_OK;
nsCOMPtr<nsIWebShell> webShellParent(do_QueryInterface(mParent));  if (webShellParent) { webShellParent->RemoveChild(this); }  if (nsnull != mDocLoader) { mDocLoader->SetContainer(nsnull); }  mContentViewer = nsnull;   DestroyChildren(); return rv;
NS_IMETHODIMP nsWebShell::Destroy(){  nsDocShell::Destroy();  SetContainer(nsnull);  return NS_OK;}