Delete support for receiving RTCP RPSI and SLI messages.

webrtc/video/encoder_rtcp_feedback.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 45 matching lines @@
     if (time_last_intra_request_ms_[index] + kMinKeyFrameRequestIntervalMs >
         now_ms) {
       return;
     }
     time_last_intra_request_ms_[index] = now_ms;
   }
 
   vie_encoder_->OnReceivedIntraFrameRequest(index);
 }
 
-void EncoderRtcpFeedback::OnReceivedSLI(uint32_t ssrc, uint8_t picture_id) {
-  RTC_DCHECK(HasSsrc(ssrc));
-
-  vie_encoder_->OnReceivedSLI(picture_id);
-}
-
-void EncoderRtcpFeedback::OnReceivedRPSI(uint32_t ssrc, uint64_t picture_id) {
-  RTC_DCHECK(HasSsrc(ssrc));
-
-  vie_encoder_->OnReceivedRPSI(picture_id);
-}
 }  // namespace webrtc