Expose getters methods for NQE on UI thread

chrome/browser/net/nqe/ui_network_quality_estimator_service.h

 // Copyright 2016 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.
 
 #ifndef CHROME_BROWSER_NET_NQE_UI_NETWORK_QUALITY_ESTIMATOR_SERVICE_H_
 #define CHROME_BROWSER_NET_NQE_UI_NETWORK_QUALITY_ESTIMATOR_SERVICE_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 28 matching lines @@
   // Must be called on the UI thread. |observer| will be notified on the UI
   // thread.  |observer| would be notified of the current effective connection
   // type in the next message pump.
   void AddEffectiveConnectionTypeObserver(
       net::NetworkQualityEstimator::EffectiveConnectionTypeObserver* observer)
       override;
   // Must be called on the UI thread.
   void RemoveEffectiveConnectionTypeObserver(
       net::NetworkQualityEstimator::EffectiveConnectionTypeObserver* observer)
       override;
+  bool GetHttpRTT(base::TimeDelta* http_rtt) const override WARN_UNUSED_RESULT;

[RyanSturm, 2017/03/15 18:25:30]

Return base::optional<TYPE> instead for these?

[tbansal1, 2017/03/15 22:34:24]

Done.

+  bool GetTransportRTT(base::TimeDelta* transport_rtt) const override
+      WARN_UNUSED_RESULT;
+  bool GetDownstreamThroughputKbps(
+      int32_t* downstream_throughput_kbps) const override WARN_UNUSED_RESULT;

[RyanSturm, 2017/03/15 18:25:30]

include <stdint.h>

[tbansal1, 2017/03/15 22:34:23]

Done.

 
   // Must be called on the UI thread. |observer| will be notified on the UI
   // thread. |observer| would be notified of the changes in the HTTP RTT,
   // transport RTT or throughput. |observer| would be notified of the current
   // values in the next message pump.
   void AddRTTAndThroughputEstimatesObserver(
       net::NetworkQualityEstimator::RTTAndThroughputEstimatesObserver* observer)
       override;
 
   // Removes |observer| from the list of RTT and throughput estimate observers.
@@ skipping 73 matching lines @@
   // Prefs manager that is owned by this service. Created on the UI thread, but
   // used and deleted on the IO thread.
   std::unique_ptr<net::NetworkQualitiesPrefsManager> prefs_manager_;
 
   base::WeakPtrFactory<UINetworkQualityEstimatorService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UINetworkQualityEstimatorService);
 };
 
 #endif  // CHROME_BROWSER_NET_NQE_UI_NETWORK_QUALITY_ESTIMATOR_SERVICE_H_