Moved Opus-specific payload splitting into AudioDecoderOpus.

webrtc/modules/audio_coding/codecs/ilbc/audio_decoder_ilbc.h

Index: webrtc/modules/audio_coding/codecs/ilbc/audio_decoder_ilbc.h
diff --git a/webrtc/modules/audio_coding/codecs/ilbc/audio_decoder_ilbc.h b/webrtc/modules/audio_coding/codecs/ilbc/audio_decoder_ilbc.h
index 3ae335ed2727cc793c247baae98c6a77ca279992..26e37bca5cc3376742180630656a50f213a4845d 100644
--- a/webrtc/modules/audio_coding/codecs/ilbc/audio_decoder_ilbc.h
+++ b/webrtc/modules/audio_coding/codecs/ilbc/audio_decoder_ilbc.h
@@ -28,8 +28,7 @@ class AudioDecoderIlbc final : public AudioDecoder {
   size_t DecodePlc(size_t num_frames, int16_t* decoded) override;
   void Reset() override;
   std::vector<ParseResult> ParsePayload(rtc::Buffer* payload,
-                                        uint32_t timestamp,
-                                        bool is_primary) override;
+                                        uint32_t timestamp) override;
   int SampleRateHz() const override;
   size_t Channels() const override;