PresShell::ScrollFrameIntoView(nsIFrame *aFrame)
PresShell::ScrollFrameIntoView(nsIFrame *aFrame, PRIntn   aVPercent, PRIntn   aHPercent) const
PresShell::ScrollFrameIntoView(nsIFrame *aFrame){  if (!aFrame)    return NS_ERROR_NULL_POINTER;    if (IsScrollingEnabled())    return ScrollFrameIntoView(aFrame, NS_PRESSHELL_SCROLL_ANYWHERE,                               NS_PRESSHELL_SCROLL_ANYWHERE);  return NS_OK;}