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

webrtc/video/end_to_end_tests.cc

Index: webrtc/video/end_to_end_tests.cc
diff --git a/webrtc/video/end_to_end_tests.cc b/webrtc/video/end_to_end_tests.cc
index 1f4ed77ffa35e3b945f1231e9dec74d30c88b8cf..4703c7364f80a0dfbbe4bd5ae993786696743e00 100644
--- a/webrtc/video/end_to_end_tests.cc
+++ b/webrtc/video/end_to_end_tests.cc
@@ -2133,12 +2133,17 @@ void EndToEndTest::VerifyHistogramStats(bool use_rtx,
       screenshare ? "WebRTC.Video.Screenshare." : "WebRTC.Video.";
 
   // Verify that stats have been updated once.
+  EXPECT_EQ(2, metrics::NumSamples("WebRTC.Call.LifetimeInSeconds"));
   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Call.VideoBitrateReceivedInKbps"));
   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Call.RtcpBitrateReceivedInBps"));
   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Call.BitrateReceivedInKbps"));
   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Call.EstimatedSendBitrateInKbps"));
   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Call.PacerBitrateInKbps"));
 
+  EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.SendStreamLifetimeInSeconds"));
+  EXPECT_EQ(1,
+            metrics::NumSamples("WebRTC.Video.ReceiveStreamLifetimeInSeconds"));
+
   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.NackPacketsSentPerMinute"));
   EXPECT_EQ(1,
             metrics::NumSamples(video_prefix + "NackPacketsReceivedPerMinute"));