[Autofill] Credit Card Autofill Last Used Date Experiment

components/autofill/core/browser/personal_data_manager.cc

Index: components/autofill/core/browser/personal_data_manager.cc
diff --git a/components/autofill/core/browser/personal_data_manager.cc b/components/autofill/core/browser/personal_data_manager.cc
index 61182febbd91e7487a8f8e661b2a8ed953d80866..b34eefa817b00a7b1189d46a58d0aa51bb660b44 100644
--- a/components/autofill/core/browser/personal_data_manager.cc
+++ b/components/autofill/core/browser/personal_data_manager.cc
@@ -1633,8 +1633,27 @@ std::vector<Suggestion> PersonalDataManager::GetSuggestionsForCards(
       // cardholder name. The label should never repeat the value.
       if (type.GetStorableType() == CREDIT_CARD_NUMBER) {
         suggestion->value = credit_card->TypeAndLastFourDigits();
-        suggestion->label = credit_card->GetInfo(
-            AutofillType(CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR), app_locale_);
+        if (IsAutofillCreditCardLastUsedDateDisplayExperimentEnabled() &&
+            !IsKeyboardAccessoryEnabled()) {
+          if (ShowExpirationDateInAutofillCreditCardLastUsedDate()) {
+            suggestion->label = credit_card->GetInfo(
+                AutofillType(CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR), app_locale_);
+          }
+          if (suggestion->label.empty()) {
+            suggestion->label = credit_card->LastUsedDateAsString(
+                ShowDetailedTimeInfoInAutofillCreditCardLastUsedDate(),
+                ShowExpirationDateInAutofillCreditCardLastUsedDate(),
+                app_locale_);
+          } else {
+            suggestion->label.append(credit_card->LastUsedDateAsString(
+                ShowDetailedTimeInfoInAutofillCreditCardLastUsedDate(),
+                ShowExpirationDateInAutofillCreditCardLastUsedDate(),
+                app_locale_));
+          }
+        } else {
+          suggestion->label = credit_card->GetInfo(
+              AutofillType(CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR), app_locale_);
+        }
         if (IsAutofillCreditCardPopupLayoutExperimentEnabled())
           ModifyAutofillCreditCardSuggestion(suggestion);
       } else if (credit_card->number().empty()) {