Adding APM configuration in AEC dump.

webrtc/modules/audio_processing/echo_cancellation_impl.h

Index: webrtc/modules/audio_processing/echo_cancellation_impl.h
diff --git a/webrtc/modules/audio_processing/echo_cancellation_impl.h b/webrtc/modules/audio_processing/echo_cancellation_impl.h
index 9c2b32c473bb6743d116a513b223aa23bcecb0a3..b96702c4f25f2a565b6a78497b02427e0221affd 100644
--- a/webrtc/modules/audio_processing/echo_cancellation_impl.h
+++ b/webrtc/modules/audio_processing/echo_cancellation_impl.h
@@ -37,14 +37,17 @@ class EchoCancellationImpl : public EchoCancellation,
   int Initialize() override;
   void SetExtraOptions(const Config& config) override;
 
+  SuppressionLevel suppression_level() const override;
+  bool is_drift_compensation_enabled() const override;
+  bool is_delay_agnostic_enabled() const;
+  bool is_extended_filter_enabled() const;
+
  private:
   // EchoCancellation implementation.
   int Enable(bool enable) override;
   int enable_drift_compensation(bool enable) override;
-  bool is_drift_compensation_enabled() const override;
   void set_stream_drift_samples(int drift) override;
   int set_suppression_level(SuppressionLevel level) override;
-  SuppressionLevel suppression_level() const override;
   int enable_metrics(bool enable) override;
   bool are_metrics_enabled() const override;
   bool stream_has_echo() const override;