Remove unnecessary interface TelephoneEventHandler

webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.cc b/webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.cc
index 38b2830b79cbe9c3e903044b8c3b2eb746d49fdb..cd25d9ef87aebbf51fa59718c4b5573dd5cf340c 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.cc
@@ -25,9 +25,7 @@ RTPReceiverStrategy* RTPReceiverStrategy::CreateAudioStrategy(
 
 RTPReceiverAudio::RTPReceiverAudio(RtpData* data_callback)
     : RTPReceiverStrategy(data_callback),
-      TelephoneEventHandler(),
       last_received_frequency_(8000),
-      telephone_event_forward_to_decoder_(false),
       telephone_event_payload_type_(-1),
       cng_nb_payload_type_(-1),
       cng_wb_payload_type_(-1),
@@ -42,19 +40,6 @@ RTPReceiverAudio::RTPReceiverAudio(RtpData* data_callback)
   memset(current_remote_energy_, 0, sizeof(current_remote_energy_));
 }
 
-// Outband TelephoneEvent(DTMF) detection
-void RTPReceiverAudio::SetTelephoneEventForwardToDecoder(
-    bool forward_to_decoder) {
-  rtc::CritScope lock(&crit_sect_);
-  telephone_event_forward_to_decoder_ = forward_to_decoder;
-}
-
-// Is forwarding of outband telephone events turned on/off?
-bool RTPReceiverAudio::TelephoneEventForwardToDecoder() const {
-  rtc::CritScope lock(&crit_sect_);
-  return telephone_event_forward_to_decoder_;
-}
-
 bool RTPReceiverAudio::TelephoneEventPayloadType(
     int8_t payload_type) const {
   rtc::CritScope lock(&crit_sect_);
@@ -356,10 +341,6 @@ int32_t RTPReceiverAudio::ParseAudioCodecSpecific(
 
     // check if it's a DTMF event, hence something we can playout
     if (telephone_event_packet) {
-      if (!telephone_event_forward_to_decoder_) {
-        // don't forward event to decoder
-        return 0;
-      }
       std::set<uint8_t>::iterator first =
           telephone_event_reported_.begin();
       if (first != telephone_event_reported_.end() && *first > 15) {