Move RtcpReportBlocks implementation from ReceiveStatistics to ReceiveStatisticsImpl

webrtc/modules/rtp_rtcp/include/receive_statistics.h

Index: webrtc/modules/rtp_rtcp/include/receive_statistics.h
diff --git a/webrtc/modules/rtp_rtcp/include/receive_statistics.h b/webrtc/modules/rtp_rtcp/include/receive_statistics.h
index d10e933810ed6db03278d2a5b921b67e042272da..11e18be841f3e8b257ff393c72048ea24577a6e6 100644
--- a/webrtc/modules/rtp_rtcp/include/receive_statistics.h
+++ b/webrtc/modules/rtp_rtcp/include/receive_statistics.h
@@ -89,10 +89,6 @@ class ReceiveStatistics : public ReceiveStatisticsProvider {
   // Called on new RTP stats creation.
   virtual void RegisterRtpStatisticsCallback(
       StreamDataCountersCallback* callback) = 0;
-
-  // TODO(danilchap): Make pure virtual when all implmentations of the
-  // ReceiveStatistics interface will implement it.
-  std::vector<rtcp::ReportBlock> RtcpReportBlocks(size_t max_blocks) override;
 };
 
 }  // namespace webrtc