Store network quality samples so we can compute percentiles.

net/url_request/url_request_unittest.cc

Index: net/url_request/url_request_unittest.cc
diff --git a/net/url_request/url_request_unittest.cc b/net/url_request/url_request_unittest.cc
index 158618fd8b4129730ad4ca3f30357abee16dc341..340b4ebea163bb8a336e2d19f59bc6a202340e6c 100644
--- a/net/url_request/url_request_unittest.cc
+++ b/net/url_request/url_request_unittest.cc
@@ -4102,12 +4102,10 @@ TEST_F(URLRequestTestHTTP, NetworkQualityEstimator) {
   base::RunLoop().Run();
 
   NetworkQuality network_quality =
-      context.network_quality_estimator()->GetEstimate();
-  EXPECT_GE(network_quality.fastest_rtt,
+      context.network_quality_estimator()->GetPeakEstimate();
+  EXPECT_GE(network_quality.rtt(),
             base::TimeDelta::FromMilliseconds(sleep_duration_milliseconds));
-  EXPECT_GT(network_quality.fastest_rtt_confidence, 0);
-  EXPECT_GT(network_quality.peak_throughput_kbps, uint64_t(0));
-  EXPECT_GT(network_quality.peak_throughput_kbps_confidence, 0);
+  EXPECT_GT(network_quality.downlink_throughput_kbps(), 0U);
 
   // Verify that histograms are not populated. They should populate only when
   // there is a change in ConnectionType.