Convert Vp8 Rtp headers to frame references.

webrtc/modules/video_coding/frame_object.cc

 /*
  *  Copyright (c) 2016 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.
  */
 
 #include "webrtc/modules/video_coding/frame_object.h"
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/modules/video_coding/packet_buffer.h"
 
 namespace webrtc {
 namespace video_coding {
 
 RtpFrameObject::RtpFrameObject(PacketBuffer* packet_buffer,
-                               uint16_t picture_id,
                                uint16_t first_packet,
                                uint16_t last_packet)
     : packet_buffer_(packet_buffer),
       first_packet_(first_packet),
       last_packet_(last_packet) {}
 
 RtpFrameObject::~RtpFrameObject() {
   packet_buffer_->ReturnFrame(this);
 }
 
-uint16_t RtpFrameObject::first_packet() const {
+uint16_t RtpFrameObject::first_seq_num() const {
   return first_packet_;
 }
 
-uint16_t RtpFrameObject::last_packet() const {
+uint16_t RtpFrameObject::last_seq_num() const {
   return last_packet_;
 }
 
-uint16_t RtpFrameObject::picture_id() const {
-  return picture_id_;
-}
-
 bool RtpFrameObject::GetBitstream(uint8_t* destination) const {
   return packet_buffer_->GetBitstream(*this, destination);
 }
 
 }  // namespace video_coding
 }  // namespace webrtc