Add EffectiveConnectionType enum to the system profile proto

ios/chrome/browser/metrics/ios_chrome_metrics_service_client.cc

Index: ios/chrome/browser/metrics/ios_chrome_metrics_service_client.cc
diff --git a/ios/chrome/browser/metrics/ios_chrome_metrics_service_client.cc b/ios/chrome/browser/metrics/ios_chrome_metrics_service_client.cc
index e0b8216fd5cd91974dcc9dbd6115ee55c84918dc..01e714b1ef63c8c20377ce565fb56fe4791b3c13 100644
--- a/ios/chrome/browser/metrics/ios_chrome_metrics_service_client.cc
+++ b/ios/chrome/browser/metrics/ios_chrome_metrics_service_client.cc
@@ -189,6 +189,8 @@ void IOSChromeMetricsServiceClient::Initialize() {
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(
           new metrics::NetworkMetricsProvider(
+              nullptr /* network_quality_task_runner */,
+              nullptr /* network_quality_estimator_provider */,
               web::WebThread::GetBlockingPool())));
 
   // Currently, we configure OmniboxMetricsProvider to not log events to UMA