Adding media.MicrophoneVolume UMA stat

media/audio/audio_input_controller.h

 // Copyright (c) 2012 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 MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_
 #define MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_
 
 #include <string>
 #include "base/atomicops.h"
 #include "base/callback.h"
@@ skipping 267 matching lines @@
   void DoCreateForLowLatency(AudioManager* audio_manager,
                              const AudioParameters& params,
                              const std::string& device_id);
   void DoCreateForStream(AudioInputStream* stream_to_control);
   void DoRecord();
   void DoClose();
   void DoReportError();
   void DoSetVolume(double volume);
   void DoSetAutomaticGainControl(bool enabled);
   void DoOnData(scoped_ptr<AudioBus> data);
-  void DoLogAudioLevel(float level_dbfs);
+  void DoLogAudioLevels(float level_dbfs, int microphone_volume_percent);
 
   // Method to check if we get recorded data after a stream was started,
   // and log the result to UMA.
   void FirstCheckForNoData();
 
   // Method which ensures that OnError() is triggered when data recording
   // times out. Called on the audio thread.
   void DoCheckForNoData();
 
   // Helper method that stops, closes, and NULL:s |*stream_|.
@@ skipping 72 matching lines @@
 
   // Time when a low-latency stream is created.
   base::TimeTicks low_latency_create_time_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioInputController);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_