Add a counter for clicking on Form-Not-Secure warnings

components/autofill/core/browser/autofill_metrics.cc

Index: components/autofill/core/browser/autofill_metrics.cc
diff --git a/components/autofill/core/browser/autofill_metrics.cc b/components/autofill/core/browser/autofill_metrics.cc
index bbceb4fe39aea517b0b9eb5bd4f510199f08c99e..8121ea313869e18f04ddafdfa755a66864dc1585 100644
--- a/components/autofill/core/browser/autofill_metrics.cc
+++ b/components/autofill/core/browser/autofill_metrics.cc
@@ -675,6 +675,12 @@ void AutofillMetrics::LogIsQueriedCreditCardFormSecure(bool is_secure) {
   UMA_HISTOGRAM_BOOLEAN("Autofill.QueriedCreditCardFormIsSecure", is_secure);
 }
 
+// static
+void AutofillMetrics::LogShowedHttpNotSecureExplanation() {
+  base::RecordAction(
+      base::UserMetricsAction("Autofill_ShowedHttpNotSecureExplanation"));
+}
+
 AutofillMetrics::FormEventLogger::FormEventLogger(bool is_for_credit_card)
     : is_for_credit_card_(is_for_credit_card),
       is_server_data_available_(false),