bool Browser::ShouldPreserveAbortedURLs(WebContents* source) {
  Profile* profile = Profile::FromBrowserContext(source->GetBrowserContext());
  if (!profile || !source->GetController().GetLastCommittedEntry())
    return false;
  GURL committed_url(source->GetController().GetLastCommittedEntry()->GetURL());
  return search::IsNTPURL(committed_url, profile);
}

Unknown