Moved the AGC render sample queue into the audio processing module

webrtc/modules/audio_processing/gain_control_impl.h

Index: webrtc/modules/audio_processing/gain_control_impl.h
diff --git a/webrtc/modules/audio_processing/gain_control_impl.h b/webrtc/modules/audio_processing/gain_control_impl.h
index 1af6d7b246e8048f066f10af7325edfc47e040a5..812b88cb8d2dac6afc17c4a016c6e8525e495726 100644
--- a/webrtc/modules/audio_processing/gain_control_impl.h
+++ b/webrtc/modules/audio_processing/gain_control_impl.h
@@ -31,21 +31,21 @@ class GainControlImpl : public GainControl {
                   rtc::CriticalSection* crit_capture);
   ~GainControlImpl() override;
 
-  int ProcessRenderAudio(AudioBuffer* audio);
+  void ProcessRenderAudio(rtc::ArrayView<const int16_t> packed_render_audio);
   int AnalyzeCaptureAudio(AudioBuffer* audio);
   int ProcessCaptureAudio(AudioBuffer* audio, bool stream_has_echo);
 
   void Initialize(size_t num_proc_channels, int sample_rate_hz);
 
+  static void PackRenderAudioBuffer(AudioBuffer* audio,
+                                    std::vector<int16_t>* packed_buffer);
+
   // GainControl implementation.
   bool is_enabled() const override;
   int stream_analog_level() override;
   bool is_limiter_enabled() const override;
   Mode mode() const override;
 
-  // Reads render side data that has been queued on the render call.
-  void ReadQueuedRenderData();
-
   int compression_gain_db() const override;
 
  private:
@@ -64,7 +64,6 @@ class GainControlImpl : public GainControl {
   int analog_level_maximum() const override;
   bool stream_is_saturated() const override;
 
-  void AllocateRenderQueue();
   int Configure();
 
   rtc::CriticalSection* const crit_render_ ACQUIRED_BEFORE(crit_capture_);
@@ -82,16 +81,6 @@ class GainControlImpl : public GainControl {
   bool was_analog_level_set_ GUARDED_BY(crit_capture_);
   bool stream_is_saturated_ GUARDED_BY(crit_capture_);
 
-  size_t render_queue_element_max_size_ GUARDED_BY(crit_render_)
-      GUARDED_BY(crit_capture_);
-  std::vector<int16_t> render_queue_buffer_ GUARDED_BY(crit_render_);
-  std::vector<int16_t> capture_queue_buffer_ GUARDED_BY(crit_capture_);
-
-  // Lock protection not needed.
-  std::unique_ptr<
-      SwapQueue<std::vector<int16_t>, RenderQueueItemVerifier<int16_t>>>
-      render_signal_queue_;
-
   std::vector<std::unique_ptr<GainController>> gain_controllers_;
 
   rtc::Optional<size_t> num_proc_channels_ GUARDED_BY(crit_capture_);