Multi frequency DTMF support - sender side

webrtc/api/call/audio_send_stream.h

Index: webrtc/api/call/audio_send_stream.h
diff --git a/webrtc/api/call/audio_send_stream.h b/webrtc/api/call/audio_send_stream.h
index 78ab8ec52e6ea32ab7e8f590a16fa67fb5477c94..e1fccc7ec84a462261b3850adcb5e4c8c4f46513 100644
--- a/webrtc/api/call/audio_send_stream.h
+++ b/webrtc/api/call/audio_send_stream.h
@@ -127,8 +127,8 @@ class AudioSendStream {
   virtual void Stop() = 0;
 
   // TODO(solenberg): Make payload_type a config property instead.
-  virtual bool SendTelephoneEvent(int payload_type, int event,
-                                  int duration_ms) = 0;
+  virtual bool SendTelephoneEvent(int payload_type, int payload_frequency,
+                                  int event, int duration_ms) = 0;
 
   virtual void SetMuted(bool muted) = 0;