Cleaned up and revised the handling of resampling and bandsplitting in APM and

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 2459ce3b4b7e943412d2d6c7608a1be24edef48c..1af6d7b246e8048f066f10af7325edfc47e040a5 100644
--- a/webrtc/modules/audio_processing/gain_control_impl.h
+++ b/webrtc/modules/audio_processing/gain_control_impl.h
@@ -43,11 +43,6 @@ class GainControlImpl : public GainControl {
   bool is_limiter_enabled() const override;
   Mode mode() const override;
 
-  // Checks whether the module is enabled. Must only be
-  // called from the render side of APM as otherwise
-  // deadlocks may occur.
-  bool is_enabled_render_side_query() const;
-
   // Reads render side data that has been queued on the render call.
   void ReadQueuedRenderData();