Add functionality for embedders to configure NQE

net/nqe/network_quality_estimator_params.cc

Index: net/nqe/network_quality_estimator_params.cc
diff --git a/net/nqe/network_quality_estimator_params.cc b/net/nqe/network_quality_estimator_params.cc
index 348ae73ece87aec8f352eabf0f31b6fa38cb522e..3297f84c693aeeb00375d7358269a9ad021d1cbd 100644
--- a/net/nqe/network_quality_estimator_params.cc
+++ b/net/nqe/network_quality_estimator_params.cc
@@ -422,7 +422,6 @@ NetworkQualityEstimatorParams::NetworkQualityEstimatorParams(
 }
 
 NetworkQualityEstimatorParams::~NetworkQualityEstimatorParams() {
-  DCHECK(thread_checker_.CalledOnValidThread());
 }
 
 // static
@@ -466,27 +465,27 @@ const char* NetworkQualityEstimatorParams::GetNameForConnectionType(
 const nqe::internal::NetworkQuality&
 NetworkQualityEstimatorParams::DefaultObservation(
     NetworkChangeNotifier::ConnectionType type) const {
-  DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   return default_observations_[type];
 }
 
 const nqe::internal::NetworkQuality&
 NetworkQualityEstimatorParams::TypicalNetworkQuality(
     EffectiveConnectionType type) const {
-  DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   return typical_network_quality_[type];
 }
 
 const nqe::internal::NetworkQuality&
 NetworkQualityEstimatorParams::ConnectionThreshold(
     EffectiveConnectionType type) const {
-  DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   return connection_thresholds_[type];
 }
 
 NetworkQualityEstimatorParams::EffectiveConnectionTypeAlgorithm
 NetworkQualityEstimatorParams::GetEffectiveConnectionTypeAlgorithm() const {
-  DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   return effective_connection_type_algorithm_;
 }