Expose RTT and downlink bandwidth using experimental Javascript API

net/nqe/network_quality_estimator.h

 // 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.
 
 #ifndef NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_
 #define NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 429 matching lines @@
   virtual base::TimeDelta GetRTTEstimateInternal(
       const std::vector<NetworkQualityObservationSource>&
           disallowed_observation_sources,
       base::TimeTicks start_time,
       const base::Optional<Statistic>& statistic,
       int percentile) const;
   int32_t GetDownlinkThroughputKbpsEstimateInternal(
       const base::TimeTicks& start_time,
       int percentile) const;
 
+  // Notifies the observers of RTT or throughput estimates computation.
+  virtual void NotifyObserversOfRTTOrThroughputComputed() const;
+
+  // Notifies |observer| of the current RTT and throughput if |observer| is
+  // still registered as an observer.
+  virtual void NotifyRTTAndThroughputEstimatesObserverIfPresent(
+      RTTAndThroughputEstimatesObserver* observer) const;
+
   // Observer list for RTT or throughput estimates. Protected for testing.
   base::ObserverList<RTTAndThroughputEstimatesObserver>
       rtt_and_throughput_estimates_observer_list_;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            AdaptiveRecomputationEffectiveConnectionType);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, StoreObservations);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestAddObservation);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
@@ skipping 102 matching lines @@
   // Returns true only if the |request| can be used for RTT estimation.
   bool RequestProvidesRTTObservation(const URLRequest& request) const;
 
   // Recomputes effective connection type, if it was computed more than the
   // specified duration ago, or if there has been a connection change recently.
   void MaybeComputeEffectiveConnectionType();
 
   // Notifies observers of a change in effective connection type.
   void NotifyObserversOfEffectiveConnectionTypeChanged();
 
-  // Notifies the observers of RTT or throughput estimates computation.
-  void NotifyObserversOfRTTOrThroughputComputed() const;
-
   // Notifies |observer| of the current effective connection type if |observer|
   // is still registered as an observer.
   void NotifyEffectiveConnectionTypeObserverIfPresent(
       EffectiveConnectionTypeObserver* observer) const;
 
-  // Notifies |observer| of the current RTT and throughput if |observer| is
-  // still registered as an observer.
-  void NotifyRTTAndThroughputEstimatesObserverIfPresent(
-      RTTAndThroughputEstimatesObserver* observer) const;
-
   // Records NQE accuracy metrics. |measuring_duration| should belong to the
   // vector returned by AccuracyRecordingIntervals().
   // RecordAccuracyAfterMainFrame should be called |measuring_duration| after a
   // main frame request is observed.
   void RecordAccuracyAfterMainFrame(base::TimeDelta measuring_duration) const;
 
   // Obtains the current cellular signal strength value and updates
   // |min_signal_strength_since_connection_change_| and
   // |max_signal_strength_since_connection_change_|.
   void UpdateSignalStrength();
@@ skipping 215 matching lines @@
       disallowed_observation_sources_for_transport_;
 
   base::WeakPtrFactory<NetworkQualityEstimator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkQualityEstimator);
 };
 
 }  // namespace net
 
 #endif  // NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_