return NS_OK;
NS_IMETHODIMP imgRequest::FrameChanged(imgIContainer *container,                                       gfxIImageFrame *newframe,                                       nsIntRect * dirtyRect){  LOG_SCOPE(gImgLog, "imgRequest::FrameChanged");  PRInt32 count = mObservers.Count();  for (PRInt32 i = 0; i < count; i++) {    imgRequestProxy *proxy = NS_STATIC_CAST(imgRequestProxy*, mObservers[i]);    if (proxy) proxy->FrameChanged(container, newframe, dirtyRect);    // If this assertion fires, it means that imgRequest notifications could    // be dropped!    NS_ASSERTION(count == mObservers.Count(),                 "The observer list changed while being iterated over!");  }  return NS_OK;}