Refactor rtcp statistics: Rtcp module take narrow interface

webrtc/modules/rtp_rtcp/source/receive_statistics_impl.cc

Index: webrtc/modules/rtp_rtcp/source/receive_statistics_impl.cc
diff --git a/webrtc/modules/rtp_rtcp/source/receive_statistics_impl.cc b/webrtc/modules/rtp_rtcp/source/receive_statistics_impl.cc
index 6d64304149d662f746c78563e389a1e03deea921..ea2d152153c311fb3ac1e2a9e8d7679c8432cf4e 100644
--- a/webrtc/modules/rtp_rtcp/source/receive_statistics_impl.cc
+++ b/webrtc/modules/rtp_rtcp/source/receive_statistics_impl.cc
@@ -13,10 +13,12 @@
 #include <math.h>
 
 #include <cstdlib>
+#include <vector>
 
 #include "webrtc/modules/remote_bitrate_estimator/test/bwe_test_logging.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_rtcp_config.h"
 #include "webrtc/modules/rtp_rtcp/source/time_util.h"
+#include "webrtc/rtc_base/logging.h"
 #include "webrtc/system_wrappers/include/clock.h"
 
 namespace webrtc {
@@ -492,6 +494,26 @@ void ReceiveStatisticsImpl::DataCountersUpdated(const StreamDataCounters& stats,
   }
 }
 
+std::vector<rtcp::ReportBlock> ReceiveStatistics::GetActiveStatistics() {
+  std::vector<rtcp::ReportBlock> result;
+  for (auto& statistician : GetActiveStatisticians()) {
+    rtcp::ReportBlock block;
+    block.SetMediaSsrc(statistician.first);
+    RtcpStatistics stats;
+    if (!statistician.second->GetStatistics(&stats, true))
+      continue;
+    block.SetFractionLost(stats.fraction_lost);
+    if (!block.SetCumulativeLost(stats.cumulative_lost)) {
+      LOG(LS_WARNING) << "Cumulative lost is oversized.";
+      continue;
+    }
+    block.SetExtHighestSeqNum(stats.extended_max_sequence_number);
+    block.SetJitter(stats.jitter);
+    result.push_back(block);
+  }
+  return result;
+}
+
 void NullReceiveStatistics::IncomingPacket(const RTPHeader& rtp_header,
                                            size_t packet_length,
                                            bool retransmitted) {}