The current scheme for setting parameters and specifying the behavior

of the audio processing module is quite complex and hard to implement
in a threadsafe and efficient manner. Therefore a new scheme for setting
the parameters in the audio processing module is introduced in this CL.

The idea is to roll this scheme out gradually and as a first functionality
in the audio processing module where this is applied the level controller
was chosen. This CL includes the replacement of the Config-based
level controller scheme with the new scheme.

BUG=webrtc:5298

Review-Url: https://codereview.webrtc.org/2292863002
Cr-Commit-Position: refs/heads/master@{#14171}

webrtc/modules/audio_processing/echo_cancellation_impl.h

@@ -43,7 +43,7 @@ class EchoCancellationImpl : public EchoCancellation {
                   size_t num_reverse_channels_,
                   size_t num_output_channels_,
                   size_t num_proc_channels_);
-  void SetExtraOptions(const Config& config);
+  void SetExtraOptions(const webrtc::Config& config);
   bool is_delay_agnostic_enabled() const;
   bool is_extended_filter_enabled() const;
   bool is_aec3_enabled() const;