Expose getters methods for NQE on UI thread

net/nqe/network_quality_estimator.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/nqe/network_quality_estimator.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 #include <utility>
@@ skipping 1816 matching lines @@
     case STATISTIC_UNWEIGHTED_AVERAGE:
       return "UnweightedAverage";
     case STATISTIC_LAST:
       NOTREACHED();
       return "";
   }
   NOTREACHED();
   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