Add PeerConnection option to enable RTX handling in the audio jitter buffer.

Bug: webrtc:10178
Change-Id: I70abce0c7b74124d2b1978d9a5eb8216b6233d1a
Reviewed-on: https://webrtc-review.googlesource.com/c/116784
Commit-Queue: Jakob Ivarsson‎ <jakobi@webrtc.org>
Reviewed-by: Minyue Li <minyue@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26203}
diff --git a/audio/channel_receive.h b/audio/channel_receive.h
index 6bbf990..2c45a8f 100644
--- a/audio/channel_receive.h
+++ b/audio/channel_receive.h
@@ -139,6 +139,7 @@
     size_t jitter_buffer_max_packets,
     bool jitter_buffer_fast_playout,
     int jitter_buffer_min_delay_ms,
+    bool jitter_buffer_enable_rtx_handling,
     rtc::scoped_refptr<AudioDecoderFactory> decoder_factory,
     absl::optional<AudioCodecPairId> codec_pair_id,
     rtc::scoped_refptr<FrameDecryptorInterface> frame_decryptor,