[rtp_rtcp] rtcp::Sli packet moved into own file and got Parse function

webrtc/modules/rtp_rtcp/source/rtcp_packet.cc

Index: webrtc/modules/rtp_rtcp/source/rtcp_packet.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_packet.cc b/webrtc/modules/rtp_rtcp/source/rtcp_packet.cc
index 7a9fb9b5fd177b32dead9718dce5e4cdff1b6a3b..94001dbb27cc2546fe40405da5dc75322ac284ec 100644
--- a/webrtc/modules/rtp_rtcp/source/rtcp_packet.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtcp_packet.cc
@@ -34,8 +34,6 @@ using webrtc::RTCPUtility::RTCPPacketPSFBFIR;
 using webrtc::RTCPUtility::RTCPPacketPSFBFIRItem;
 using webrtc::RTCPUtility::RTCPPacketPSFBREMBItem;
 using webrtc::RTCPUtility::RTCPPacketPSFBRPSI;
-using webrtc::RTCPUtility::RTCPPacketPSFBSLI;
-using webrtc::RTCPUtility::RTCPPacketPSFBSLIItem;
 using webrtc::RTCPUtility::RTCPPacketReportBlockItem;
 using webrtc::RTCPUtility::RTCPPacketRTPFBNACK;
 using webrtc::RTCPUtility::RTCPPacketRTPFBNACKItem;
@@ -185,30 +183,6 @@ void CreateSdes(const std::vector<Sdes::Chunk>& chunks,
   }
 }
 
-// Slice loss indication (SLI) (RFC 4585).
-//
-// FCI:
-//
-//    0                   1                   2                   3
-//    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-//   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-//   |            First        |        Number           | PictureID |
-//   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-void CreateSli(const RTCPPacketPSFBSLI& sli,
-               const RTCPPacketPSFBSLIItem& sli_item,
-               uint8_t* buffer,
-               size_t* pos) {
-  AssignUWord32(buffer, pos, sli.SenderSSRC);
-  AssignUWord32(buffer, pos, sli.MediaSSRC);
-
-  AssignUWord8(buffer, pos, sli_item.FirstMB >> 5);
-  AssignUWord8(buffer, pos, (sli_item.FirstMB << 3) +
-                            ((sli_item.NumberOfMB >> 10) & 0x07));
-  AssignUWord8(buffer, pos, sli_item.NumberOfMB >> 2);
-  AssignUWord8(buffer, pos, (sli_item.NumberOfMB << 6) + sli_item.PictureId);
-}
-
 // Reference picture selection indication (RPSI) (RFC 4585).
 //
 // FCI:
@@ -558,20 +532,6 @@ size_t Sdes::BlockLength() const {
   return length;
 }
 
-bool Sli::Create(uint8_t* packet,
-                 size_t* index,
-                 size_t max_length,
-                 RtcpPacket::PacketReadyCallback* callback) const {
-  while (*index + BlockLength() > max_length) {
-    if (!OnBufferFull(packet, index, callback))
-      return false;
-  }
-  const uint8_t kFmt = 2;
-  CreateHeader(kFmt, PT_PSFB, HeaderLength(), packet, index);
-  CreateSli(sli_, sli_item_, packet, index);
-  return true;
-}
-
 bool Rpsi::Create(uint8_t* packet,
                   size_t* index,
                   size_t max_length,