Enable NQE when Cronet Engine is built

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 238 matching lines @@
   // Adds |throughput_observer| to the list of throughput observers. Must be
   // called on the IO thread.
   void AddThroughputObserver(ThroughputObserver* throughput_observer);
 
   // Removes |throughput_observer| from the list of throughput observers if it
   // is on the list of observers. Must be called on the IO thread.
   void RemoveThroughputObserver(ThroughputObserver* throughput_observer);
 
   SocketPerformanceWatcherFactory* GetSocketPerformanceWatcherFactory();
 
+  // |use_local_host_requests_for_tests| should only be true when testing
+  // against local HTTP server and allows the requests to local host to be
+  // used for network quality estimation.
+  void SetUseLocalHostRequestsForTesting(
+      bool use_local_host_requests_for_tests);
+
+  // |use_smaller_responses_for_tests| should only be true when testing.
+  // Allows the responses smaller than |kMinTransferSizeInBits| to be used for
+  // network quality estimation.
+  void SetUseSmallResponsesForTesting(bool use_small_responses);
+
  protected:
   // NetworkID is used to uniquely identify a network.
   // For the purpose of network quality estimation and caching, a network is
   // uniquely identified by a combination of |type| and
   // |id|. This approach is unable to distinguish networks with
   // same name (e.g., different Wi-Fi networks with same SSID).
   // This is a protected member to expose it to tests.
   struct NET_EXPORT_PRIVATE NetworkID {
     NetworkID(NetworkChangeNotifier::ConnectionType type, const std::string& id)
         : type(type), id(id) {}
@@ skipping 183 matching lines @@
     EXTERNAL_ESTIMATE_PROVIDER_STATUS_DOWNLINK_BANDWIDTH_AVAILABLE,
     EXTERNAL_ESTIMATE_PROVIDER_STATUS_BOUNDARY
   };
 
   // Records the metrics related to external estimate provider.
   void RecordExternalEstimateProviderMetrics(
       NQEExternalEstimateProviderStatus status) const;
 
   // Determines if the requests to local host can be used in estimating the
   // network quality. Set to true only for tests.
-  const bool use_localhost_requests_;
+  bool use_localhost_requests_;
 
   // Determines if the responses smaller than |kMinTransferSizeInBytes|
   // or shorter than |kMinTransferSizeInBytes| can be used in estimating the
   // network quality. Set to true only for tests.
-  const bool use_small_responses_;
+  bool use_small_responses_;
 
   // The factor by which the weight of an observation reduces every second.
   const double weight_multiplier_per_second_;
 
   // Tick clock used by the network quality estimator.
   std::unique_ptr<base::TickClock> tick_clock_;
 
   // Minimum duration between two consecutive computations of effective
   // connection type. Set to non-zero value as a performance optimization.
   const base::TimeDelta effective_connection_type_recomputation_interval_;
@@ skipping 70 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_