[Autofill] Credit Card Autofill Last Used Date Experiment

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 1416cdd753c09728dc384c746a3fa25c2602f765..47ec32ba63e68ffefac31caa99ecae6162e1c0c9 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -695,6 +695,39 @@ kAutofillCreditCardPopupLayoutFeatureVariations[] = {
      nullptr}};
 #endif  // OS_ANDROID
 
+#if defined(OS_ANDROID)
+const FeatureEntry::FeatureParam
+kAutofillCreditCardLastUsedDateFeatureVariationExpDate[] = {
+  {"show_expiration_date", "true"}};
+
+const FeatureEntry::FeatureParam
+kAutofillCreditCardLastUsedDateFeatureVariationTimeDetail[] = {
+  {"show_time_detail", "true"}};
+
+const FeatureEntry::FeatureParam
+kAutofillCreditCardLastUsedDateFeatureVariationExpDateAndTimeDetail[] = {
+    {"show_expiration_date", "true"},
+    {"show_time_detail", "true"}};
+
+const FeatureEntry::FeatureVariation
+kAutofillCreditCardLastUsedDateFeatureVariations[] = {
+    {"Display expiration date",
+     kAutofillCreditCardLastUsedDateFeatureVariationExpDate,
+     arraysize(
+         kAutofillCreditCardLastUsedDateFeatureVariationExpDate),
+     nullptr},
+    {"Display time detail",
+     kAutofillCreditCardLastUsedDateFeatureVariationTimeDetail,
+     arraysize(
+         kAutofillCreditCardLastUsedDateFeatureVariationTimeDetail),
+     nullptr},
+    {"Display expiration date and time detail",
+        kAutofillCreditCardLastUsedDateFeatureVariationExpDateAndTimeDetail,
+     arraysize(
+        kAutofillCreditCardLastUsedDateFeatureVariationExpDateAndTimeDetail),
+     nullptr}};
+#endif  // OS_ANDROID
+
 // RECORDING USER METRICS FOR FLAGS:
 // -----------------------------------------------------------------------------
 // The first line of the entry is the internal name.
@@ -2195,6 +2228,13 @@ const FeatureEntry kFeatureEntries[] = {
                      autofill::kAutofillCreditCardPopupLayout,
                      kAutofillCreditCardPopupLayoutFeatureVariations,
                      "AutofillCreditCardPopupLayout")},
+    {"enable-autofill-credit-card-last-used-date-display",
+     IDS_FLAGS_ENABLE_AUTOFILL_CREDIT_CARD_LAST_USED_DATE_DISPLAY,
+     IDS_FLAGS_ENABLE_AUTOFILL_CREDIT_CARD_LAST_USED_DATE_DISPLAY_DESCRIPTION,
+     kOsAndroid, FEATURE_WITH_VARIATIONS_VALUE_TYPE(
+                     autofill::kAutofillCreditCardLastUsedDateDisplay,
+                     kAutofillCreditCardLastUsedDateFeatureVariations,
+                     "AutofillCreditCardLastUsedDate")},
     {"native-android-history-manager", IDS_NATIVE_ANDROID_HISTORY_MANAGER,
      IDS_NATIVE_ANDROID_HISTORY_MANAGER_DESCRIPTION, kOsAndroid,
      FEATURE_VALUE_TYPE(chrome::android::kNativeAndroidHistoryManager)},