Style fixes in rtcp_packet/

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

Index: webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.cc b/webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.cc
index 93da4dcd1b4cfe94694e6d16619379b5afe7b507..03a9dbd86ec42960e7dc53abaf473063253c8ed3 100644
--- a/webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.cc
@@ -29,6 +29,11 @@ constexpr uint8_t ReceiverReport::kPacketType;
 //  +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
 //  |                         report block(s)                       |
 //  |                            ....                               |
+
+ReceiverReport::ReceiverReport() : sender_ssrc_(0) {}
+
+ReceiverReport::~ReceiverReport() = default;
+
 bool ReceiverReport::Parse(const CommonHeader& packet) {
   RTC_DCHECK_EQ(packet.type(), kPacketType);
 
@@ -55,6 +60,11 @@ bool ReceiverReport::Parse(const CommonHeader& packet) {
   return true;
 }
 
+size_t ReceiverReport::BlockLength() const {
+  return kHeaderLength + kRrBaseLength +
+         report_blocks_.size() * ReportBlock::kLength;
+}
+
 bool ReceiverReport::Create(uint8_t* packet,
                             size_t* index,
                             size_t max_length,