Make NQE a derived class of NetworkQualityProvider

net/nqe/network_quality_estimator.cc

Index: net/nqe/network_quality_estimator.cc
diff --git a/net/nqe/network_quality_estimator.cc b/net/nqe/network_quality_estimator.cc
index 8759b0fb4324cef241909f79fe3adf3fb2c12ec5..6aefd09f2513a6757af5a54e9e3f17b91cd171fe 100644
--- a/net/nqe/network_quality_estimator.cc
+++ b/net/nqe/network_quality_estimator.cc
@@ -1767,6 +1767,14 @@ void NetworkQualityEstimator::OnPrefsRead(
   }
 }
 
+base::Optional<base::TimeDelta> NetworkQualityEstimator::GetHttpRTT() const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+  if (network_quality_.http_rtt() == nqe::internal::InvalidRTT())
+    return base::Optional<base::TimeDelta>();
+  return network_quality_.http_rtt();
+}
+
 base::Optional<base::TimeDelta> NetworkQualityEstimator::GetTransportRTT()
     const {
   DCHECK(thread_checker_.CalledOnValidThread());
@@ -1776,6 +1784,17 @@ base::Optional<base::TimeDelta> NetworkQualityEstimator::GetTransportRTT()
   return network_quality_.transport_rtt();
 }
 
+base::Optional<int32_t> NetworkQualityEstimator::GetDownstreamThroughputKbps()
+    const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+  if (network_quality_.downstream_throughput_kbps() ==
+      nqe::internal::kInvalidThroughput) {
+    return base::Optional<int32_t>();
+  }
+  return network_quality_.downstream_throughput_kbps();
+}
+
 void NetworkQualityEstimator::MaybeUpdateNetworkQualityFromCache(
     const nqe::internal::NetworkID& network_id,
     const nqe::internal::CachedNetworkQuality& cached_network_quality) {