Add function that converts string connection type to ECT

net/nqe/network_quality_estimator.cc

Index: net/nqe/network_quality_estimator.cc
diff --git a/net/nqe/network_quality_estimator.cc b/net/nqe/network_quality_estimator.cc
index 93e177d07803d2e5bf6a3798106f1792a317f7ad..3b27cb7afc9163482e722c67d8dd8c333b7a1ec6 100644
--- a/net/nqe/network_quality_estimator.cc
+++ b/net/nqe/network_quality_estimator.cc
@@ -1074,8 +1074,9 @@ void NetworkQualityEstimator::OnUpdatedEstimateAvailable(
   }
 }
 
+// static
 const char* NetworkQualityEstimator::GetNameForEffectiveConnectionType(
-    EffectiveConnectionType type) const {
+    EffectiveConnectionType type) {
   switch (type) {
     case EFFECTIVE_CONNECTION_TYPE_UNKNOWN:
       return "Unknown";
@@ -1098,6 +1099,28 @@ const char* NetworkQualityEstimator::GetNameForEffectiveConnectionType(
   return "";
 }
 
+// static
+NetworkQualityEstimator::EffectiveConnectionType
+NetworkQualityEstimator::GetEffectiveConnectionTypeForName(
+    const std::string& connection_type_name) {
+  if (connection_type_name == "Unknown")
+    return EFFECTIVE_CONNECTION_TYPE_UNKNOWN;
+  if (connection_type_name == "Offline")
+    return EFFECTIVE_CONNECTION_TYPE_OFFLINE;
+  if (connection_type_name == "Slow2G")
+    return EFFECTIVE_CONNECTION_TYPE_SLOW_2G;
+  if (connection_type_name == "2G")
+    return EFFECTIVE_CONNECTION_TYPE_2G;
+  if (connection_type_name == "3G")
+    return EFFECTIVE_CONNECTION_TYPE_3G;
+  if (connection_type_name == "4G")
+    return EFFECTIVE_CONNECTION_TYPE_4G;
+  if (connection_type_name == "Broadband")
+    return EFFECTIVE_CONNECTION_TYPE_BROADBAND;
+  NOTREACHED();
+  return EFFECTIVE_CONNECTION_TYPE_UNKNOWN;
+}
+
 void NetworkQualityEstimator::SetTickClockForTesting(
     std::unique_ptr<base::TickClock> tick_clock) {
   DCHECK(thread_checker_.CalledOnValidThread());