Clean up the media stream audio track code

content/renderer/media/media_stream_audio_processor_options.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_PROCESSOR_OPTIONS_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_PROCESSOR_OPTIONS_H_
 
 #include <string>
 
 #include "base/files/file.h"
@@ skipping 41 matching lines @@
   static void ApplyFixedAudioConstraints(RTCMediaConstraints* constraints);
 
   // |effects| is the bitmasks telling whether certain platform
   // hardware audio effects are enabled, like hardware echo cancellation. If
   // some hardware effect is enabled, the corresponding software audio
   // processing will be disabled.
   MediaAudioConstraints(const blink::WebMediaConstraints& constraints,
                         int effects);
   virtual ~MediaAudioConstraints();
 
-  // Checks if any audio constraints are set that requires audio processing to
-  // be applied.
-  bool NeedsAudioProcessing();
-
   // Gets the property of the constraint named by |key| in |constraints_|.
   // Returns the constraint's value if the key is found; Otherwise returns the
   // default value of the constraint.
   // Note, for constraint of |kEchoCancellation| or |kGoogEchoCancellation|,
   // clients should use GetEchoCancellationProperty().
   bool GetProperty(const std::string& key);
 
   // Gets the property of echo cancellation defined in |constraints_|. The
   // returned value depends on a combination of |effects_|, |kEchoCancellation|
   // and |kGoogEchoCancellation| in |constraints_|.
@@ skipping 59 matching lines @@
 void StopEchoCancellationDump(AudioProcessing* audio_processing);
 
 void EnableAutomaticGainControl(AudioProcessing* audio_processing);
 
 void GetAecStats(AudioProcessing* audio_processing,
                  webrtc::AudioProcessorInterface::AudioProcessorStats* stats);
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_PROCESSOR_OPTIONS_H_