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 15203aac232c4597dbe4a88e4a7a7f02cf0797b8..da98abd0b8d25e3345522a429406588c289f819e 100644
--- a/net/nqe/network_quality_estimator_test_util.h
+++ b/net/nqe/network_quality_estimator_test_util.h
@@ -82,6 +82,15 @@ 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.

[RyanSturm, 2016/10/11 01:46:26]

Add comments about how |http_rtt|, |transport_rtt| and
|downstream_throughput_kbps| are set.

[tbansal1, 2016/10/11 17:46:12]

Done.

+  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;