Make NotifyHeadersComplete the last call in the function.

BUG=82903
Review URL: http://codereview.chromium.org/7038017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@85719 0039d316-1c4b-4281-b951-d872f2087c98
int BlobURLRequestJob::GetResponseCode() const {
  if (!response_info_.get())
    return -1;

  return response_info_->headers->response_code();
}

int BlobURLRequestJob::GetResponseCode() const {
  if (!response_info_.get())
    return -1;

  return response_info_->headers->response_code();
}
