Split captive portal metrics out of SSLErrorClassification

components/security_interstitials/core/metrics_helper.cc

Index: components/security_interstitials/core/metrics_helper.cc
diff --git a/components/security_interstitials/core/metrics_helper.cc b/components/security_interstitials/core/metrics_helper.cc
index da7002bec35e566c8fe37ffae9263592b8888908..7466562841b05856c140b01aa17cef46a6a8cf75 100644
--- a/components/security_interstitials/core/metrics_helper.cc
+++ b/components/security_interstitials/core/metrics_helper.cc
@@ -134,6 +134,10 @@ void MetricsHelper::RecordUserInteraction(Interaction interaction) {
   RecordExtraUserInteractionMetrics(interaction);
 }
 
+void MetricsHelper::RecordShutdownMetrics() {
+  RecordExtraShutdownMetrics();
+}
+
 int MetricsHelper::NumVisits() {
   return num_visits_;
 }