Expose a method GetRecentEffectiveConnectionType in NQE.

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 fd51a61499febb3b757eed73700cc40ccc0149a3..2444ba77069066721c2402558976d862b6bfb934 100644
--- a/net/nqe/network_quality_estimator.h
+++ b/net/nqe/network_quality_estimator.h
@@ -280,7 +280,7 @@ class NET_EXPORT_PRIVATE NetworkQualityEstimator
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestCaching);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            TestLRUCacheMaximumSize);
-  FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestGetMedianRTTSince);
+  FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestGetMetricsSince);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            TestExternalEstimateProviderMergeEstimates);
 
@@ -355,6 +355,11 @@ class NET_EXPORT_PRIVATE NetworkQualityEstimator
   // current connection type to the observation buffer.
   void AddDefaultEstimates();
 
+  // Returns the effective type of the current connection based on only the
+  // samples observed after |start_time|.
+  EffectiveConnectionType GetRecentEffectiveConnectionType(
+      const base::TimeTicks& start_time) const;
+
   // Returns an estimate of network quality at the specified |percentile|.
   // |disallowed_observation_sources| is the list of observation sources that
   // should be excluded when computing the percentile.