Add function that converts string connection type to 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 d11b4841628cec93f6b83ffb75f15e6cd50f8035..33c6c989dd386c489be1a1194e2f0e8a5bf88ef3 100644
--- a/net/nqe/network_quality_estimator.h
+++ b/net/nqe/network_quality_estimator.h
@@ -256,6 +256,14 @@ class NET_EXPORT_PRIVATE NetworkQualityEstimator
 
   SocketPerformanceWatcherFactory* GetSocketPerformanceWatcherFactory();
 
+  // Returns a string equivalent to |type|.
+  static const char* GetNameForEffectiveConnectionType(
+      EffectiveConnectionType type);
+
+  // Returns an EffectiveConnectionType equivalent to |connection_type_name|.
+  static EffectiveConnectionType GetEffectiveConnectionTypeForName(
+      const std::string& connection_type_name);
+
  protected:
   // NetworkID is used to uniquely identify a network.
   // For the purpose of network quality estimation and caching, a network is
@@ -306,10 +314,6 @@ class NET_EXPORT_PRIVATE NetworkQualityEstimator
                                   int32_t downstream_throughput_kbps,
                                   int32_t upstream_throughput_kbps) override;
 
-  // Return a string equivalent to |type|.
-  const char* GetNameForEffectiveConnectionType(
-      EffectiveConnectionType type) const;
-
   // Returns the list of intervals at which the accuracy of network quality
   // prediction should be recorded. Virtualized for testing.
   virtual const std::vector<base::TimeDelta>& GetAccuracyRecordingIntervals()