NS_IMETHODIMP
InterceptedChannelContent::SynthesizeHeader(const nsACString& aName, const nsACString& aValue)
{
  if (mClosed) {
    return NS_ERROR_NOT_AVAILABLE;
  }

  return DoSynthesizeHeader(aName, aValue);
}
NS_IMETHODIMP
InterceptedChannelChrome::SynthesizeHeader(const nsACString& aName, const nsACString& aValue)
{
  if (!mSynthesizedCacheEntry) {
    return NS_ERROR_NOT_AVAILABLE;
  }

  return DoSynthesizeHeader(aName, aValue);
}