Remove OnLocalSsrcChanged and rename EncoderStateFeedback.

webrtc/modules/rtp_rtcp/source/rtcp_receiver.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 153 matching lines @@
   _remoteSSRC = ssrc;
 }
 
 uint32_t RTCPReceiver::RemoteSSRC() const {
   rtc::CritScope lock(&_criticalSectionRTCPReceiver);
   return _remoteSSRC;
 }
 
 void RTCPReceiver::SetSsrcs(uint32_t main_ssrc,
                             const std::set<uint32_t>& registered_ssrcs) {
-  uint32_t old_ssrc = 0;
-  {
-    rtc::CritScope lock(&_criticalSectionRTCPReceiver);
-    old_ssrc = main_ssrc_;
-    main_ssrc_ = main_ssrc;
-    registered_ssrcs_ = registered_ssrcs;
-  }
-  {
-    if (_cbRtcpIntraFrameObserver && old_ssrc != main_ssrc) {
-      _cbRtcpIntraFrameObserver->OnLocalSsrcChanged(old_ssrc, main_ssrc);
-    }
-  }
+  rtc::CritScope lock(&_criticalSectionRTCPReceiver);
+  main_ssrc_ = main_ssrc;
+  registered_ssrcs_ = registered_ssrcs;
 }
 
 int32_t RTCPReceiver::RTT(uint32_t remote_ssrc,
                           int64_t* last_rtt_ms,
                           int64_t* avg_rtt_ms,
                           int64_t* min_rtt_ms,
                           int64_t* max_rtt_ms) const {
   rtc::CritScope lock(&_criticalSectionRTCPReceiver);
 
   auto it = received_report_blocks_.find(main_ssrc_);
@@ skipping 878 matching lines @@
       } else {
         candidates.push_back(it->second.tmmbr_item);
         ++it;
       }
     }
   }
   return candidates;
 }
 
 }  // namespace webrtc