Style fixes in rtcp_packet/

webrtc/modules/rtp_rtcp/source/rtcp_packet/dlrr.cc

 /*
  *  Copyright (c) 2015 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 15 matching lines @@
 //  |                 SSRC_1 (SSRC of first receiver)               | sub-
 //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ block
 //  |                         last RR (LRR)                         |   1
 //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 //  |                   delay since last RR (DLRR)                  |
 //  +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
 //  |                 SSRC_2 (SSRC of second receiver)              | sub-
 //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ block
 //  :                               ...                             :   2
 
+Dlrr::Dlrr() = default;
+
+Dlrr::Dlrr(const Dlrr& other) = default;
+
+Dlrr::~Dlrr() = default;
+
 bool Dlrr::Parse(const uint8_t* buffer, uint16_t block_length_32bits) {
   RTC_DCHECK(buffer[0] == kBlockType);
   // kReserved = buffer[1];
   RTC_DCHECK_EQ(block_length_32bits,
                 ByteReader<uint16_t>::ReadBigEndian(&buffer[2]));
   if (block_length_32bits % 3 != 0) {
     LOG(LS_WARNING) << "Invalid size for dlrr block.";
     return false;
   }
 
@@ skipping 31 matching lines @@
     ByteWriter<uint32_t>::WriteBigEndian(&write_at[4], sub_block.last_rr);
     ByteWriter<uint32_t>::WriteBigEndian(&write_at[8],
                                          sub_block.delay_since_last_rr);
     write_at += kSubBlockLength;
   }
   RTC_DCHECK_EQ(buffer + BlockLength(), write_at);
 }
 
 }  // namespace rtcp
 }  // namespace webrtc