Record how frequently EEP provides valid estimates

net/base/network_quality_estimator.h

Index: net/base/network_quality_estimator.h
diff --git a/net/base/network_quality_estimator.h b/net/base/network_quality_estimator.h
index 7aecd3265f527048935a7f3c94e72727e5a1cd8d..4c9065feffb40383de5ab36b50cd024df87d2171 100644
--- a/net/base/network_quality_estimator.h
+++ b/net/base/network_quality_estimator.h
@@ -281,8 +281,6 @@ class NET_EXPORT_PRIVATE NetworkQualityEstimator
                            TestLRUCacheMaximumSize);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest, TestGetMedianRTTSince);
   FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
-                           TestExternalEstimateProvider);
-  FRIEND_TEST_ALL_PREFIXES(NetworkQualityEstimatorTest,
                            TestExternalEstimateProviderMergeEstimates);
 
   class SocketWatcher;
@@ -592,6 +590,8 @@ class NET_EXPORT_PRIVATE NetworkQualityEstimator
     EXTERNAL_ESTIMATE_PROVIDER_STATUS_QUERIED,
     EXTERNAL_ESTIMATE_PROVIDER_STATUS_QUERY_SUCCESSFUL,
     EXTERNAL_ESTIMATE_PROVIDER_STATUS_CALLBACK,
+    EXTERNAL_ESTIMATE_PROVIDER_STATUS_RTT_AVAILABLE,
+    EXTERNAL_ESTIMATE_PROVIDER_STATUS_DOWNLINK_BANDWIDTH_AVAILABLE,
     EXTERNAL_ESTIMATE_PROVIDER_STATUS_BOUNDARY
   };