Add counters 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 974f39d96d77b1cc0f6a9c70399bc7f3df46a2f5..c4f24c57f5cc0b4f4e5676e1643ebac4150275f4 100644
--- a/components/autofill/core/browser/autofill_metrics.h
+++ b/components/autofill/core/browser/autofill_metrics.h
@@ -663,6 +663,10 @@ class AutofillMetrics {
   // context.
   static void LogIsQueriedCreditCardFormSecure(bool is_secure);
 
+  // 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 {