Add functionality for embedders to configure NQE

net/nqe/network_quality_estimator_params.cc

 // 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.
 
 #include "net/nqe/network_quality_estimator_params.h"
 
 #include <stdint.h>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
@@ skipping 403 matching lines @@
   DCHECK_NE(EffectiveConnectionTypeAlgorithm::
                 EFFECTIVE_CONNECTION_TYPE_ALGORITHM_LAST,
             effective_connection_type_algorithm_);
 
   ObtainDefaultObservations(params_, default_observations_);
   ObtainTypicalNetworkQualities(params_, typical_network_quality_);
   ObtainConnectionThresholds(params_, connection_thresholds_);
 }
 
 NetworkQualityEstimatorParams::~NetworkQualityEstimatorParams() {
-  DCHECK(thread_checker_.CalledOnValidThread());
 }
 
 // static
 NetworkQualityEstimatorParams::EffectiveConnectionTypeAlgorithm
 NetworkQualityEstimatorParams::GetEffectiveConnectionTypeAlgorithmFromString(
     const std::string& algorithm_param_value) {
   // The default algorithm to be used if the algorithm value is not available
   // through field trial parameters.
   static const EffectiveConnectionTypeAlgorithm
       kDefaultEffectiveConnectionTypeAlgorithm =
@@ skipping 48 matching lines @@
   return connection_thresholds_[type];
 }
 
 NetworkQualityEstimatorParams::EffectiveConnectionTypeAlgorithm
 NetworkQualityEstimatorParams::GetEffectiveConnectionTypeAlgorithm() const {
   DCHECK(thread_checker_.CalledOnValidThread());
   return effective_connection_type_algorithm_;
 }
 
 }  // namespace net