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

webrtc/modules/audio_processing/gain_control_impl.cc

Index: webrtc/modules/audio_processing/gain_control_impl.cc
diff --git a/webrtc/modules/audio_processing/gain_control_impl.cc b/webrtc/modules/audio_processing/gain_control_impl.cc
index 2461f72ad358d26b29ba8ef057d496302aae9a99..6bb1d2029b626d84e7388a648aca4b3ff1107fe5 100644
--- a/webrtc/modules/audio_processing/gain_control_impl.cc
+++ b/webrtc/modules/audio_processing/gain_control_impl.cc
@@ -316,12 +316,6 @@ int GainControlImpl::Enable(bool enable) {
   return AudioProcessing::kNoError;
 }
 
-bool GainControlImpl::is_enabled_render_side_query() const {
-  // TODO(peah): Add threadchecker.
-  rtc::CritScope cs(crit_render_);
-  return enabled_;
-}
-
 bool GainControlImpl::is_enabled() const {
   rtc::CritScope cs(crit_capture_);
   return enabled_;