Remove streaming_mode as it is always false.

Change-Id: I489b72985f36fd98413ecf729f7d69476c342851

Bug: webrtc:10618
Change-Id: I489b72985f36fd98413ecf729f7d69476c342851
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/136803
Reviewed-by: Jakob Ivarsson‎ <jakobi@webrtc.org>
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Commit-Queue: Ruslan Burakov <kuddai@google.com>
Cr-Commit-Position: refs/heads/master@{#27948}
diff --git a/modules/audio_coding/neteq/delay_manager.h b/modules/audio_coding/neteq/delay_manager.h
index e54e950..9066f7f 100644
--- a/modules/audio_coding/neteq/delay_manager.h
+++ b/modules/audio_coding/neteq/delay_manager.h
@@ -102,8 +102,7 @@
   // packets in Q8.
   virtual void BufferLimits(int* lower_limit, int* higher_limit) const;
 
-  // Gets the target buffer level, in (fractions of) packets in Q8. This value
-  // includes any extra delay set through the set_extra_delay_ms() method.
+  // Gets the target buffer level, in (fractions of) packets in Q8.
   virtual int TargetLevel() const;
 
   // Informs the delay manager whether or not the last decoded packet contained
@@ -122,7 +121,6 @@
   virtual bool SetBaseMinimumDelay(int delay_ms);
   virtual int GetBaseMinimumDelay() const;
   virtual int base_target_level() const;
-  virtual void set_streaming_mode(bool value);
   virtual int last_pack_cng_or_dtmf() const;
   virtual void set_last_pack_cng_or_dtmf(int value);
 
@@ -150,10 +148,6 @@
   // Calculate relative packet arrival delay from |delay_history_|.
   int CalculateRelativePacketArrivalDelay() const;
 
-  // Updates |iat_cumulative_sum_| and |max_iat_cumulative_sum_|. (These are
-  // used by the streaming mode.) This method is called by Update().
-  void UpdateCumulativeSums(int packet_len_ms, uint16_t sequence_number);
-
   // Updates |effective_minimum_delay_ms_| delay based on current
   // |minimum_delay_ms_|, |base_minimum_delay_ms_| and |maximum_delay_ms_|
   // and buffer size.
@@ -192,15 +186,10 @@
   int target_level_;   // Currently preferred buffer level in (fractions)
                        // of packets (Q8), before adding any extra delay.
   int packet_len_ms_;  // Length of audio in each incoming packet [ms].
-  bool streaming_mode_;
   uint16_t last_seq_no_;         // Sequence number for last received packet.
   uint32_t last_timestamp_;      // Timestamp for the last received packet.
   int minimum_delay_ms_;         // Externally set minimum delay.
   int maximum_delay_ms_;         // Externally set maximum allowed delay.
-  int iat_cumulative_sum_;       // Cumulative sum of delta inter-arrival times.
-  int max_iat_cumulative_sum_;   // Max of |iat_cumulative_sum_|.
-  // Time elapsed since maximum was observed.
-  std::unique_ptr<TickTimer::Stopwatch> max_iat_stopwatch_;
   DelayPeakDetector& peak_detector_;
   int last_pack_cng_or_dtmf_;
   const bool frame_length_change_experiment_;