Add functionality for embedders to configure NQE

net/nqe/network_quality_estimator_params.h

Index: net/nqe/network_quality_estimator_params.h
diff --git a/net/nqe/network_quality_estimator_params.h b/net/nqe/network_quality_estimator_params.h
index da8d17bf79d03d16eb2c5e3a2de4c50094e8875f..f46367e14573dccc71cf55871f0e4245b2b3f0a7 100644
--- a/net/nqe/network_quality_estimator_params.h
+++ b/net/nqe/network_quality_estimator_params.h
@@ -96,14 +96,28 @@ class NET_EXPORT NetworkQualityEstimatorParams {
   // the effective connection type that has been forced.
   base::Optional<EffectiveConnectionType> forced_effective_connection_type()
       const {
+    DCHECK(thread_checker_.CalledOnValidThread());
     return forced_effective_connection_type_;
   }
 
+  void SetForcedEffectiveConnectionType(
+      EffectiveConnectionType forced_effective_connection_type) {
+    DCHECK(thread_checker_.CalledOnValidThread());
+    forced_effective_connection_type_ = forced_effective_connection_type;
+  }
+
   // Returns true if reading from the persistent cache is enabled.
   bool persistent_cache_reading_enabled() const {
+    DCHECK(thread_checker_.CalledOnValidThread());
     return persistent_cache_reading_enabled_;
   }
 
+  void set_persistent_cache_reading_enabled(
+      bool persistent_cache_reading_enabled) {
+    DCHECK(thread_checker_.CalledOnValidThread());
+    persistent_cache_reading_enabled_ = persistent_cache_reading_enabled;
+  }
+
   // Returns the the minimum interval betweeen consecutive notifications to a
   // single socket watcher.
   base::TimeDelta min_socket_watcher_notification_interval() const {
@@ -117,6 +131,14 @@ class NET_EXPORT NetworkQualityEstimatorParams {
   GetEffectiveConnectionTypeAlgorithmFromString(
       const std::string& algorithm_param_value);
 
+  void SetEffectiveConnectionTypeAlgorithm(
+      EffectiveConnectionTypeAlgorithm algorithm) {
+    DCHECK(thread_checker_.CalledOnValidThread());
+    effective_connection_type_algorithm_ = algorithm;
+  }
+
+  void DetachFromThread() { thread_checker_.DetachFromThread(); }

[mgersh, 2017/06/28 18:26:50]

While you're here, can this ThreadChecker be changed to a SequenceChecker?

[tbansal1, 2017/06/29 01:17:58]

Done.

+
  private:
   // Map containing all field trial parameters related to
   // NetworkQualityEstimator field trial.
@@ -126,9 +148,8 @@ class NET_EXPORT NetworkQualityEstimatorParams {
   const double weight_multiplier_per_second_;
   const double weight_multiplier_per_dbm_;
   const double correlation_uma_logging_probability_;
-  const base::Optional<EffectiveConnectionType>
-      forced_effective_connection_type_;
-  const bool persistent_cache_reading_enabled_;
+  base::Optional<EffectiveConnectionType> forced_effective_connection_type_;
+  bool persistent_cache_reading_enabled_;
   const base::TimeDelta min_socket_watcher_notification_interval_;
 
   EffectiveConnectionTypeAlgorithm effective_connection_type_algorithm_;