Add quic_logging

net/quic/core/congestion_control/rtt_stats.cc

Index: net/quic/core/congestion_control/rtt_stats.cc
diff --git a/net/quic/core/congestion_control/rtt_stats.cc b/net/quic/core/congestion_control/rtt_stats.cc
index da3c14646fc66608d9df89cdd405aa840e3cf654..1fd7a2c95800fb19a6619c1cf52736812ae1ade0 100644
--- a/net/quic/core/congestion_control/rtt_stats.cc
+++ b/net/quic/core/congestion_control/rtt_stats.cc
@@ -6,6 +6,8 @@
 
 #include <cstdlib>  // std::abs
 
+#include "net/quic/platform/api/quic_logging.h"
+
 namespace net {
 
 namespace {
@@ -39,9 +41,10 @@ void RttStats::UpdateRtt(QuicTime::Delta send_delta,
                          QuicTime::Delta ack_delay,
                          QuicTime now) {
   if (send_delta.IsInfinite() || send_delta <= QuicTime::Delta::Zero()) {
-    LOG(WARNING) << "Ignoring measured send_delta, because it's is "
-                 << "either infinite, zero, or negative.  send_delta = "
-                 << send_delta.ToMicroseconds();
+    QUIC_LOG_FIRST_N(WARNING, 3)
+        << "Ignoring measured send_delta, because it's is "
+        << "either infinite, zero, or negative.  send_delta = "
+        << send_delta.ToMicroseconds();
     return;
   }
 
@@ -73,8 +76,8 @@ void RttStats::UpdateRtt(QuicTime::Delta send_delta,
         kOneMinusBeta * mean_deviation_.ToMicroseconds() +
         kBeta * std::abs((smoothed_rtt_ - rtt_sample).ToMicroseconds())));
     smoothed_rtt_ = kOneMinusAlpha * smoothed_rtt_ + kAlpha * rtt_sample;
-    DVLOG(1) << " smoothed_rtt(us):" << smoothed_rtt_.ToMicroseconds()
-             << " mean_deviation(us):" << mean_deviation_.ToMicroseconds();
+    QUIC_DVLOG(1) << " smoothed_rtt(us):" << smoothed_rtt_.ToMicroseconds()
+                  << " mean_deviation(us):" << mean_deviation_.ToMicroseconds();
   }
 }