Introduced the new parameter setting scheme for activating the high-pass filter in APM

webrtc/media/engine/webrtcvoiceengine.h

Index: webrtc/media/engine/webrtcvoiceengine.h
diff --git a/webrtc/media/engine/webrtcvoiceengine.h b/webrtc/media/engine/webrtcvoiceengine.h
index efb71202019b04d5875cc2dfcee60d2c99c0713d..03b493744b857f903cbb09f530794787466e7b8f 100644
--- a/webrtc/media/engine/webrtcvoiceengine.h
+++ b/webrtc/media/engine/webrtcvoiceengine.h
@@ -89,6 +89,10 @@ class WebRtcVoiceEngine final : public webrtc::TraceCallback  {
   // Stops AEC dump.
   void StopAecDump();
 
+  const webrtc::AudioProcessing::Config& GetApmConfigForTest() const {
+    return apm_config_;
+  }
+
  private:
   // Every option that is "set" will be applied. Every option not "set" will be
   // ignored. This allows us to selectively turn on and off different options