Remove chain of methods in RtpRtcp module to get current payload frequency for RTCP SRs

webrtc/modules/rtp_rtcp/source/rtp_sender.cc

 /*
  *  Copyright (c) 2012 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 308 matching lines @@
 void RTPSender::SetSendPayloadType(int8_t payload_type) {
   rtc::CritScope lock(&send_critsect_);
   payload_type_ = payload_type;
 }
 
 int8_t RTPSender::SendPayloadType() const {
   rtc::CritScope lock(&send_critsect_);
   return payload_type_;
 }
 
-int RTPSender::SendPayloadFrequency() const {
-  return audio_ != NULL ? audio_->AudioFrequency() : kVideoPayloadTypeFrequency;
-}
-
 void RTPSender::SetMaxPayloadLength(size_t max_payload_length) {
   // Sanity check.
   RTC_DCHECK(max_payload_length >= 100 && max_payload_length <= IP_PACKET_SIZE)
       << "Invalid max payload length: " << max_payload_length;
   rtc::CritScope lock(&send_critsect_);
   max_payload_length_ = max_payload_length;
 }
 
 size_t RTPSender::MaxDataPayloadLength() const {
   if (audio_configured_) {
@@ skipping 1420 matching lines @@
   rtc::CritScope lock(&send_critsect_);
 
   RtpState state;
   state.sequence_number = sequence_number_rtx_;
   state.start_timestamp = timestamp_offset_;
 
   return state;
 }
 
 }  // namespace webrtc