Lock scheme #8: Introduced the new locking scheme

webrtc/modules/audio_processing/high_pass_filter_impl.h

Index: webrtc/modules/audio_processing/high_pass_filter_impl.h
diff --git a/webrtc/modules/audio_processing/high_pass_filter_impl.h b/webrtc/modules/audio_processing/high_pass_filter_impl.h
index 90b393e903533380aa5e688206c0a73d3659a919..a98464734673a44645c3d5ecc8ac91cbe35d3d03 100644
--- a/webrtc/modules/audio_processing/high_pass_filter_impl.h
+++ b/webrtc/modules/audio_processing/high_pass_filter_impl.h
@@ -22,7 +22,7 @@ class CriticalSectionWrapper;
 class HighPassFilterImpl : public HighPassFilter,
                            public ProcessingComponent {
  public:
-  HighPassFilterImpl(const AudioProcessing* apm, CriticalSectionWrapper* crit);
+  HighPassFilterImpl(const AudioProcessing* apm);
   virtual ~HighPassFilterImpl();
 
   int ProcessCaptureAudio(AudioBuffer* audio);
@@ -43,7 +43,6 @@ class HighPassFilterImpl : public HighPassFilter,
   int GetHandleError(void* handle) const override;
 
   const AudioProcessing* apm_;
-  CriticalSectionWrapper* crit_;
 };
 }  // namespace webrtc