NQE: Change GetEffectiveConnectionType to return last ECT

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 80c7feb6703eb7999e95c9db5e55583680abe5bb..3529b77281221aa016d01b1d8c86056f34841377 100644
--- a/net/nqe/network_quality_estimator.h
+++ b/net/nqe/network_quality_estimator.h
@@ -148,8 +148,10 @@ class NET_EXPORT NetworkQualityEstimator
 
   ~NetworkQualityEstimator() override;
 
-  // Returns the effective type of the current connection. Virtualized for
-  // testing.
+  // Returns the last computed effective type of the current connection. The
+  // effective connection type is computed by network quality estimator at
+  // regular intervals and at certain events (e.g., connection change).
+  // Virtualized for testing.
   virtual EffectiveConnectionType GetEffectiveConnectionType() const;
 
   // Returns the effective type of the current connection based on only the
@@ -286,6 +288,10 @@ class NET_EXPORT NetworkQualityEstimator
   // Returns a random double in the range [0.0, 1.0). Virtualized for testing.
   virtual double RandDouble() const;
 
+  // Forces recomputtion of effective connection type, and notifies observers if

[RyanSturm, 2016/08/22 18:01:52]

s/recomputtion/recomputation

[tbansal1, 2016/08/22 18:17:41]

Done.

+  // there is a change in its value.
+  void RecomputeEffectiveConnectionType();
+
  private:
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            AdaptiveRecomputationEffectiveConnectionType);