Add Network Quality observer to NQE

net/nqe/network_quality_estimator_test_util.h

Index: net/nqe/network_quality_estimator_test_util.h
diff --git a/net/nqe/network_quality_estimator_test_util.h b/net/nqe/network_quality_estimator_test_util.h
index 5bad67dffc0348d9a09e4404306f5efd819890b4..5e6399dabeab605acb0878e4425e2f754e51901a 100644
--- a/net/nqe/network_quality_estimator_test_util.h
+++ b/net/nqe/network_quality_estimator_test_util.h
@@ -84,6 +84,18 @@ class TestNetworkQualityEstimator : public NetworkQualityEstimator {
   EffectiveConnectionType GetRecentEffectiveConnectionType(
       const base::TimeTicks& start_time) const override;
 
+  // Returns the effective connection type that was set using
+  // |set_effective_connection_type|. If the connection type has not been set,
+  // then the base implementation is called. |http_rtt|, |transport_rtt| and
+  // |downstream_throughput_kbps| are set to the values that were previously
+  // set by calling set_recent_http_rtt(), set_recent_transport_rtt()
+  // and set_recent_transport_rtt() methods, respectively.
+  EffectiveConnectionType GetRecentEffectiveConnectionTypeAndNetworkQuality(
+      const base::TimeTicks& start_time,
+      base::TimeDelta* http_rtt,
+      base::TimeDelta* transport_rtt,
+      int32_t* downstream_throughput_kbps) const override;
+
   void set_http_rtt(const base::TimeDelta& http_rtt) {
     http_rtt_set_ = true;
     http_rtt_ = http_rtt;