Add new decoding statistics for muted output

webrtc/modules/audio_coding/acm2/call_statistics.h

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 19 matching lines @@
 namespace webrtc {
 
 namespace acm2 {
 
 class CallStatistics {
  public:
   CallStatistics() {}
   ~CallStatistics() {}
 
   // Call this method to indicate that NetEq engaged in decoding. |speech_type|
-  // is the audio-type according to NetEq.
-  void DecodedByNetEq(AudioFrame::SpeechType speech_type);
+  // is the audio-type according to NetEq, and |muted| indicates if the decoded
+  // frame was produced in muted state.
+  void DecodedByNetEq(AudioFrame::SpeechType speech_type, bool muted);
 
   // Call this method to indicate that a decoding call resulted in generating
   // silence, i.e. call to NetEq is bypassed and the output audio is zero.
   void DecodedBySilenceGenerator();
 
   // Get statistics for decoding. The statistics include the number of calls to
   // NetEq and silence generator, as well as the type of speech pulled of off
   // NetEq, c.f. declaration of AudioDecodingCallStats for detailed description.
   const AudioDecodingCallStats& GetDecodingStatistics() const;
 
  private:
   // Reset the decoding statistics.
   void ResetDecodingStatistics();
 
   AudioDecodingCallStats decoding_stat_;
 };
 
 }  // namespace acm2
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_ACM2_CALL_STATISTICS_H_