message: Support 2 byte payload size DTX packets in NetEq simulation.
  Cr-Commit-Position: refs/heads/master@{#29286}
diff: @@ -100,7 +100,7 @@ int FakeDecodeFromFile::DecodeInternal(const uint8_t* encoded,
  uint32_t original_payload_size_bytes =
  ByteReader<uint32_t>::ReadLittleEndian(&encoded[8]);
  - if (original_payload_size_bytes == 1) {
  + if (original_payload_size_bytes <= 2) {
  // This is a comfort noise payload.
  RTC_DCHECK_GT(total_samples_to_decode, 0);
  std::fill_n(decoded, total_samples_to_decode, 0);
  @@ -135,7 +135,7 @@ int FakeDecodeFromFile::PacketDuration(const uint8_t* encoded,
  if ( // Decoder is asked to produce codec-internal comfort noise
  encoded_len == 0 ||
  // Comfort noise payload
  - original_payload_size_bytes == 1 || samples_to_decode == 0 ||
  + original_payload_size_bytes <= 2 || samples_to_decode == 0 ||
  // Erroneous duration since it is not a multiple of 10ms
  samples_to_decode % rtc::CheckedDivExact(SampleRateHz(), 100) != 0) {
  if (last_decoded_length_ > 0) {
  