Expose a method GetRecentEffectiveConnectionType in NQE.

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 262 matching lines @@
 
  private:
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, StoreObservations);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestAddObservation);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, ObtainOperatingParams);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, HalfLifeParam);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, ComputedPercentiles);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestCaching);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            TestLRUCacheMaximumSize);
-  FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestGetMedianRTTSince);
+  FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestGetMetricsSince);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            TestExternalEstimateProviderMergeEstimates);
 
   class SocketWatcher;
   class SocketWatcherFactory;
 
   // Value of round trip time observations is in base::TimeDelta.
   typedef nqe::internal::Observation<base::TimeDelta> RttObservation;
   typedef nqe::internal::ObservationBuffer<base::TimeDelta>
       RttObservationBuffer;
@@ skipping 54 matching lines @@
   // the field trial parameters. For each effective connection type, a model
   // (currently composed of a RTT threshold and a downlink throughput threshold)
   // is provided by the field trial.
   void ObtainEffectiveConnectionTypeModelParams(
       const std::map<std::string, std::string>& variation_params);
 
   // Adds the default median RTT and downstream throughput estimate for the
   // current connection type to the observation buffer.
   void AddDefaultEstimates();
 
+  // Returns the effective type of the current connection based on only the
+  // samples observed after |start_time|.
+  EffectiveConnectionType GetRecentEffectiveConnectionType(
+      const base::TimeTicks& start_time) const;
+
   // Returns an estimate of network quality at the specified |percentile|.
   // |disallowed_observation_sources| is the list of observation sources that
   // should be excluded when computing the percentile.
   // Only the observations later than |start_time| are taken into account.
   // |percentile| must be between 0 and 100 (both inclusive) with higher
   // percentiles indicating less performant networks. For example, if
   // |percentile| is 90, then the network is expected to be faster than the
   // returned estimate with 0.9 probability. Similarly, network is expected to
   // be slower than the returned estimate with 0.1 probability.
   base::TimeDelta GetRTTEstimateInternal(
@@ skipping 112 matching lines @@
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<NetworkQualityEstimator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkQualityEstimator);
 };
 
 }  // namespace net
 
 #endif  // NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_