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

components/autofill/core/browser/autofill_metrics.h

Index: components/autofill/core/browser/autofill_metrics.h
diff --git a/components/autofill/core/browser/autofill_metrics.h b/components/autofill/core/browser/autofill_metrics.h
index 9b71b004437860c8b13bf17f3138ebc544f2c877..32bc42dbb250e2ad67949a672bc75fdac95b0818 100644
--- a/components/autofill/core/browser/autofill_metrics.h
+++ b/components/autofill/core/browser/autofill_metrics.h
@@ -676,6 +676,10 @@ class AutofillMetrics {
   // profiles.
   static void LogWalletAddressConversionType(WalletAddressConversionType type);
 
+  // This should be called when the user selects the Form-Not-Secure warning
+  // suggestion to show an explanation of the warning.
+  static void LogShowedHttpNotSecureExplanation();
+
   // Utility to autofill form events in the relevant histograms depending on
   // the presence of server and/or local data.
   class FormEventLogger {