Exposing NQE on the Browser UI thread

net/nqe/network_quality_estimator.h

Index: net/nqe/network_quality_estimator.h
diff --git a/net/nqe/network_quality_estimator.h b/net/nqe/network_quality_estimator.h
index afeca4eb01e1220879cb01bf87a644ebe06a9775..a94f8da9439b9a7a266d6879a47128adb53d7b28 100644
--- a/net/nqe/network_quality_estimator.h
+++ b/net/nqe/network_quality_estimator.h
@@ -45,21 +45,21 @@ class ThroughputAnalyzer;
 class URLRequest;
 
 // NetworkQualityEstimator provides network quality estimates (quality of the
 // full paths to all origins that have been connected to).
 // The estimates are based on the observed organic traffic.
 // A NetworkQualityEstimator instance is attached to URLRequestContexts and
 // observes the traffic of URLRequests spawned from the URLRequestContexts.
 // A single instance of NQE can be attached to multiple URLRequestContexts,
 // thereby increasing the single NQE instance's accuracy by providing more
 // observed traffic characteristics.
-class NET_EXPORT_PRIVATE NetworkQualityEstimator
+class NET_EXPORT NetworkQualityEstimator
     : public NetworkChangeNotifier::ConnectionTypeObserver,
       public ExternalEstimateProvider::UpdatedEstimateDelegate {
  public:
   // EffectiveConnectionType is the connection type whose typical performance is
   // most similar to the measured performance of the network in use. In many
   // cases, the "effective" connection type and the actual type of connection in
   // use are the same, but often a network connection performs significantly
   // different, usually worse, from its expected capabilities.
   // EffectiveConnectionType of a network is independent of if the current
   // connection is metered or not. For example, an unmetered slow connection may
@@ -70,21 +70,21 @@ class NET_EXPORT_PRIVATE NetworkQualityEstimator
     EFFECTIVE_CONNECTION_TYPE_OFFLINE,
     EFFECTIVE_CONNECTION_TYPE_SLOW_2G,
     EFFECTIVE_CONNECTION_TYPE_2G,
     EFFECTIVE_CONNECTION_TYPE_3G,
     EFFECTIVE_CONNECTION_TYPE_4G,
     EFFECTIVE_CONNECTION_TYPE_BROADBAND,
     EFFECTIVE_CONNECTION_TYPE_LAST,
   };
 
   // Observes changes in effective connection type.
-  class NET_EXPORT_PRIVATE EffectiveConnectionTypeObserver {
+  class NET_EXPORT EffectiveConnectionTypeObserver {
    public:
     // Notifies the observer of a change in the effective connection type.
     // NetworkQualityEstimator computes the effective connection type once in
     // every interval of duration
     // |effective_connection_type_recomputation_interval_|. Additionally, when
     // there is a change in the connection type of the device, then the
     // effective connection type is immediately recomputed. The observer must
     // register and unregister itself on the IO thread. All the observers would
     // be notified on the IO thread.
     //