Add EffectiveConnectionType enum to the system profile proto

net/nqe/network_quality_estimator_test_util.cc

Index: net/nqe/network_quality_estimator_test_util.cc
diff --git a/net/nqe/network_quality_estimator_test_util.cc b/net/nqe/network_quality_estimator_test_util.cc
index 44d5babf192b0f5f40bf5bb71c1af6ad03c59b74..e236986b049c005ed2b865b30d7e33d99db028f2 100644
--- a/net/nqe/network_quality_estimator_test_util.cc
+++ b/net/nqe/network_quality_estimator_test_util.cc
@@ -20,6 +20,9 @@ const base::FilePath::CharType kTestFilePath[] =
 
 namespace net {
 
+TestNetworkQualityEstimator::TestNetworkQualityEstimator()
+    : TestNetworkQualityEstimator(std::map<std::string, std::string>()) {}
+
 TestNetworkQualityEstimator::TestNetworkQualityEstimator(
     const std::map<std::string, std::string>& variation_params,
     std::unique_ptr<net::ExternalEstimateProvider> external_estimate_provider)