Expose getters methods for NQE on UI thread

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 8bd94fb9963a9f4a4fa66ade5fae59971f50790d..ded544753f0048f6968e87444b62e2a86ba35db9 100644
--- a/net/nqe/network_quality_estimator.cc
+++ b/net/nqe/network_quality_estimator.cc
@@ -1834,4 +1834,20 @@ const char* NetworkQualityEstimator::GetNameForStatistic(int i) const {
   return "";
 }
 
+base::Optional<base::TimeDelta>
+NetworkQualityEstimator::NetworkQualityProvider::GetHttpRTT() const {
+  return base::Optional<base::TimeDelta>();
+}
+
+base::Optional<base::TimeDelta>
+NetworkQualityEstimator::NetworkQualityProvider::GetTransportRTT() const {
+  return base::Optional<base::TimeDelta>();
+}
+
+base::Optional<int32_t>
+NetworkQualityEstimator::NetworkQualityProvider::GetDownstreamThroughputKbps()
+    const {
+  return base::Optional<int32_t>();
+}
+
 }  // namespace net