NetEq: Add new method last_output_sample_rate_hz

webrtc/modules/audio_coding/main/acm2/acm_receiver.h

Index: webrtc/modules/audio_coding/main/acm2/acm_receiver.h
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_receiver.h b/webrtc/modules/audio_coding/main/acm2/acm_receiver.h
index 7dc851a1ba6a3adf2ee113b5e3b7e2f580013f4a..f02605bb718434ec561b9eb5749c902ef334206d 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_receiver.h
+++ b/webrtc/modules/audio_coding/main/acm2/acm_receiver.h
@@ -154,12 +154,8 @@ class AcmReceiver {
   //
   void ResetInitialDelay();
 
-  //
-  // Get the current sampling frequency in Hz.
-  //
-  // Return value             : Sampling frequency in Hz.
-  //
-  int current_sample_rate_hz() const;
+  // Returns last_output_sample_rate_hz from the NetEq instance.
+  int last_output_sample_rate_hz() const;
 
   //
   // Get the current network statistics from NetEq.
@@ -287,7 +283,6 @@ class AcmReceiver {
   int id_;  // TODO(henrik.lundin) Make const.
   const Decoder* last_audio_decoder_ GUARDED_BY(crit_sect_);
   AudioFrame::VADActivity previous_audio_activity_ GUARDED_BY(crit_sect_);
-  int current_sample_rate_hz_ GUARDED_BY(crit_sect_);
   ACMResampler resampler_ GUARDED_BY(crit_sect_);
   // Used in GetAudio, declared as member to avoid allocating every 10ms.
   // TODO(henrik.lundin) Stack-allocate in GetAudio instead?