[Autofill] Add a new metric for upstream.

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 e655f7fe66f9abaff1408423c1f65e2fcf68b254..bbceb4fe39aea517b0b9eb5bd4f510199f08c99e 100644
--- a/components/autofill/core/browser/autofill_metrics.cc
+++ b/components/autofill/core/browser/autofill_metrics.cc
@@ -814,6 +814,10 @@ void AutofillMetrics::FormEventLogger::OnWillSubmitForm() {
     Log(AutofillMetrics::FORM_EVENT_LOCAL_SUGGESTION_WILL_SUBMIT_ONCE);
   }
 
+  if (has_logged_suggestions_shown_) {
+    Log(AutofillMetrics::FORM_EVENT_SUGGESTION_SHOWN_WILL_SUBMIT_ONCE);
+  }
+
   base::RecordAction(base::UserMetricsAction("Autofill_OnWillSubmitForm"));
 }
 
@@ -837,6 +841,10 @@ void AutofillMetrics::FormEventLogger::OnFormSubmitted() {
   } else {
     Log(AutofillMetrics::FORM_EVENT_LOCAL_SUGGESTION_SUBMITTED_ONCE);
   }
+
+  if (has_logged_suggestions_shown_) {
+    Log(AutofillMetrics::FORM_EVENT_SUGGESTION_SHOWN_SUBMITTED_ONCE);
+  }
 }
 
 void AutofillMetrics::FormEventLogger::Log(FormEvent event) const {