Update from https://crrev.com/303153

net/quic/congestion_control/rtt_stats.cc

Index: net/quic/congestion_control/rtt_stats.cc
diff --git a/net/quic/congestion_control/rtt_stats.cc b/net/quic/congestion_control/rtt_stats.cc
index 7b25b6c6d373268a76a2085e4f20b056d859e41d..dfb50efd4c777739e77d245fe188ea0f3121d2a6 100644
--- a/net/quic/congestion_control/rtt_stats.cc
+++ b/net/quic/congestion_control/rtt_stats.cc
@@ -32,10 +32,6 @@ RttStats::RttStats()
       num_min_rtt_samples_remaining_(0),
       recent_min_rtt_window_(QuicTime::Delta::Infinite()) {}
 
-bool RttStats::HasUpdates() const {
-  return !smoothed_rtt_.IsZero();
-}
-
 void RttStats::SampleNewRecentMinRtt(uint32 num_samples) {
   num_min_rtt_samples_remaining_ = num_samples;
   new_min_rtt_ = RttSample();
@@ -78,7 +74,7 @@ void RttStats::UpdateRtt(QuicTime::Delta send_delta,
   }
   latest_rtt_ = rtt_sample;
   // First time call.
-  if (!HasUpdates()) {
+  if (smoothed_rtt_.IsZero()) {
     smoothed_rtt_ = rtt_sample;
     mean_deviation_ = QuicTime::Delta::FromMicroseconds(
         rtt_sample.ToMicroseconds() / 2);
@@ -131,18 +127,4 @@ void RttStats::UpdateRecentMinRtt(QuicTime::Delta rtt_sample, QuicTime now) {
   }
 }
 
-QuicTime::Delta RttStats::SmoothedRtt() const {
-  if (!HasUpdates()) {
-    return QuicTime::Delta::FromMicroseconds(initial_rtt_us_);
-  }
-  return smoothed_rtt_;
-}
-
-QuicTime::Delta RttStats::MinRtt() const {
-  if (!HasUpdates()) {
-    return QuicTime::Delta::FromMicroseconds(initial_rtt_us_);
-  }
-  return min_rtt_;
-}
-
 }  // namespace net