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..9be1e4414038e5fc3d1a6887d6b384a887010b45 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.
     //
@@ -230,20 +230,25 @@ class NET_EXPORT_PRIVATE NetworkQualityEstimator
   // |use_localhost_requests| 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_localhost_requests);
 
   // |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);
 
+  // Reports |effective_connection_type| to all
+  // EffectiveConnectionTypeObservers.
+  void ReportEffectiveConnectionTypeForTesting(
+      EffectiveConnectionType effective_connection_type);
+
  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) {}