message: Don't allocate audio if we have no transport sequence number.
  Cr-Commit-Position: refs/heads/master@{#29432}
diff: @@ -360,12 +360,9 @@ void AudioSendStream::Start() {
  if (sending_) {
  return;
  }
  - // TODO(srte): We should not add audio to allocation just because
  - // audio_send_side_bwe_ is false.
  if (!config_.has_dscp && config_.min_bitrate_bps != -1 &&
  config_.max_bitrate_bps != -1 &&
  - (allocate_audio_without_feedback_ || TransportSeqNumId(config_) != 0 ||
  - !audio_send_side_bwe_)) {
  + (allocate_audio_without_feedback_ || TransportSeqNumId(config_) != 0)) {
  rtp_transport_->AccountForAudioPacketsInPacedSender(true);
  rtp_rtcp_module_->SetAsPartOfAllocation(true);
  rtc::Event thread_sync_event;
  @@ -824,11 +821,8 @@ void AudioSendStream::ReconfigureBitrateObserver(
  return;
  }
  - // TODO(srte): We should not add audio to allocation just because
  - // audio_send_side_bwe_ is false.
  if (!new_config.has_dscp && new_config.min_bitrate_bps != -1 &&
  - new_config.max_bitrate_bps != -1 &&
  - (TransportSeqNumId(new_config) != 0 || !audio_send_side_bwe_)) {
  + new_config.max_bitrate_bps != -1 && TransportSeqNumId(new_config) != 0) {
  rtp_transport_->AccountForAudioPacketsInPacedSender(true);
  rtc::Event thread_sync_event;
  worker_queue_->PostTask([&] {
  