Update video histograms that do not have a minimum lifetime limit before being recorded.

webrtc/video/receive_statistics_proxy.h

Index: webrtc/video/receive_statistics_proxy.h
diff --git a/webrtc/video/receive_statistics_proxy.h b/webrtc/video/receive_statistics_proxy.h
index 445a731f240c61eb257a569ed52a4ba67bd5baab..b75ad8c093d6322099590db39889f53f72fc2b97 100644
--- a/webrtc/video/receive_statistics_proxy.h
+++ b/webrtc/video/receive_statistics_proxy.h
@@ -123,6 +123,7 @@ class ReceiveStatisticsProxy : public VCMReceiveStatisticsCallback,
   SampleCounter delay_counter_ GUARDED_BY(crit_);
   SampleCounter e2e_delay_counter_ GUARDED_BY(crit_);
   MaxCounter freq_offset_counter_ GUARDED_BY(crit_);
+  int64_t first_report_block_time_ms_ GUARDED_BY(crit_);
   ReportBlockStats report_block_stats_ GUARDED_BY(crit_);
   QpCounters qp_counters_;  // Only accessed on the decoding thread.
   std::map<uint32_t, StreamDataCounters> rtx_stats_ GUARDED_BY(crit_);