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 db48dd8cbde0a5023c70e5a0f9971475e9f14147..707e3f81828b5fe8b3fdc8ee3e07dcdae45307a5 100644
--- a/components/autofill/core/browser/autofill_metrics.cc
+++ b/components/autofill/core/browser/autofill_metrics.cc
@@ -683,6 +683,12 @@ void AutofillMetrics::LogWalletAddressConversionType(
                             NUM_CONVERTED_ADDRESS_CONVERSION_TYPES);
 }
 
+// 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),