Style fixes in rtcp_packet/

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

Index: webrtc/modules/rtp_rtcp/source/rtcp_packet/extended_reports.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_packet/extended_reports.cc b/webrtc/modules/rtp_rtcp/source/rtcp_packet/extended_reports.cc
index 4c02c1ab1ad789cb2920e985194ebc78bf4b3336..583083b6acf2b388d5d75ff6e8b109818fc0b150 100644
--- a/webrtc/modules/rtp_rtcp/source/rtcp_packet/extended_reports.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtcp_packet/extended_reports.cc
@@ -118,6 +118,11 @@ void ExtendedReports::SetTargetBitrate(const TargetBitrate& bitrate) {
   target_bitrate_ = rtc::Optional<TargetBitrate>(bitrate);
 }
 
+size_t ExtendedReports::BlockLength() const {
+  return kHeaderLength + kXrBaseLength + RrtrLength() + DlrrLength() +
+         VoipMetricLength() + TargetBitrateLength();
+}
+
 bool ExtendedReports::Create(uint8_t* packet,
                              size_t* index,
                              size_t max_length,