Only update codec type histogram if lifetime is long enough (10 sec).

webrtc/video/receive_statistics_proxy.cc

Index: webrtc/video/receive_statistics_proxy.cc
diff --git a/webrtc/video/receive_statistics_proxy.cc b/webrtc/video/receive_statistics_proxy.cc
index 57d1f569cfd9168783cad153ec8a4df9aa7f2398..90575436a24b7424869e534c85ca13700e201cde 100644
--- a/webrtc/video/receive_statistics_proxy.cc
+++ b/webrtc/video/receive_statistics_proxy.cc
@@ -24,6 +24,7 @@ ReceiveStatisticsProxy::ReceiveStatisticsProxy(
     Clock* clock)
     : clock_(clock),
       config_(*config),
+      start_ms_(clock->TimeInMilliseconds()),
       // 1000ms window, scale 1000 for ms to s.
       decode_fps_estimator_(1000, 1000),
       renders_fps_estimator_(1000, 1000),
@@ -39,6 +40,10 @@ ReceiveStatisticsProxy::~ReceiveStatisticsProxy() {
 }
 
 void ReceiveStatisticsProxy::UpdateHistograms() {
+  RTC_LOGGED_HISTOGRAM_COUNTS_100000(
+      "WebRTC.Video.ReceiveStreamLifetimeInSeconds",
+      (clock_->TimeInMilliseconds() - start_ms_) / 1000);
+
   int fraction_lost = report_block_stats_.FractionLostInPercent();
   if (fraction_lost != -1) {
     RTC_LOGGED_HISTOGRAM_PERCENTAGE("WebRTC.Video.ReceivedPacketsLostInPercent",