nsHTMLFrameOuterFrame::GetDocShell(nsIDocShell **aDocShell)
nsHTMLFrameInnerFrame::GetDocShell(nsIDocShell **aDocShell)
nsHTMLFrameOuterFrame::GetDocShell(nsIDocShell **aDocShell){  *aDocShell = nsnull;  nsHTMLFrameInnerFrame* firstChild = NS_STATIC_CAST(nsHTMLFrameInnerFrame*,                                                     mFrames.FirstChild());  if (!firstChild)     return NS_OK;  return firstChild->GetDocShell(aDocShell);}