Read NQE prefs to network quality store under all cases

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 380 matching lines @@
                            ObtainAlgorithmToUseFromParams);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, HalfLifeParam);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, ComputedPercentiles);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestGetMetricsSince);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            TestExternalEstimateProviderMergeEstimates);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            UnknownEffectiveConnectionType);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            TypicalNetworkQualities);
+  FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
+                           OnPrefsReadWithReadingDisabled);
 
   // Value of round trip time observations is in base::TimeDelta.
   typedef nqe::internal::Observation<base::TimeDelta> RttObservation;
   typedef nqe::internal::ObservationBuffer<base::TimeDelta>
       RttObservationBuffer;
 
   // Value of throughput observations is in kilobits per second.
   typedef nqe::internal::Observation<int32_t> ThroughputObservation;
   typedef nqe::internal::ObservationBuffer<int32_t> ThroughputObservationBuffer;
 
@@ skipping 343 matching lines @@
 
   // Stores the qualities of different networks.
   std::unique_ptr<nqe::internal::NetworkQualityStore> network_quality_store_;
 
   // True if effective connection type value has been forced via variation
   // parameters. If set to true, GetEffectiveConnectionType() will always return
   // |forced_effective_connection_type_|.
   const bool forced_effective_connection_type_set_;
   const EffectiveConnectionType forced_effective_connection_type_;
 
+  // Set to true if reading of the network quality prefs is enabled.
+  const bool persistent_cache_reading_enabled_;
+
   base::ThreadChecker thread_checker_;
 
   // Manages the writing of events to the net log.
   nqe::internal::EventCreator event_creator_;
 
   base::WeakPtrFactory<NetworkQualityEstimator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkQualityEstimator);
 };
 
 }  // namespace net
 
 #endif  // NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_