nsImageDocument::OnStartFrame(imgIRequest* aRequest, nsISupports* aCX, gfxIImageFrame* aFrame)
nsImageDocument::OnStartFrame(imgIRequest* aRequest, gfxIImageFrame* aFrame)
nsImageDocument::OnStartFrame(imgIRequest* aRequest,                              nsISupports* aCX,                              gfxIImageFrame* aFrame){  return NS_OK;}