[Autofill] Credit Card Autofill Last Used Date Experiment

components/autofill_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <grit-part>
 
   <if expr="not is_ios">
     <message name="IDS_AUTOFILL_CLEAR_FORM_MENU_ITEM" desc="The entry in the suggestions dropdown that clears an auto-filled form.">
       Clear form
     </message>
   </if>
   <if expr="is_ios">
     <message name="IDS_AUTOFILL_CLEAR_FORM_MENU_ITEM" desc="iOS: The entry in the suggestions keyboard accessory that clears an auto-filled form.">
@@ skipping 193 matching lines @@
       Do you want Chromium to save this card?
     </message>
   </if>
   <message name="IDS_AUTOFILL_SAVE_CARD_PROMPT_TITLE_TO_CLOUD" desc="Title text for the Autofill save card prompt when the card is to be saved by uploading it to Google Payments. The prompt can be either a bubble or an infobar.">
     Do you want to save this card to your Google Account?
   </message>
   <message name="IDS_AUTOFILL_SAVE_CARD_PROMPT_UPLOAD_EXPLANATION" desc="Explanation of the effect of the Autofill save card prompt when the card is to be saved by uploading it to Google Payments. The prompt can be either a bubble or an infobar.">
     Pay quickly on sites and apps across devices using cards you have saved with Google.
   </message>
 
+  <!-- Autofill credit card suggestion popup -->
   <message name="IDS_AUTOFILL_CREDIT_CARD_EXPIRATION_DATE_ABBR" desc="Abbreviated label for credit card expiration date. [CHAR-LIMIT=32]">
     Exp: <ph name="EXPIRATION_MONTH">$1<ex>06</ex></ph>/<ph name="EXPIRATION_YEAR">$2<ex>17</ex></ph>
   </message>
 
-  <message name="IDS_AUTOFILL_CREDIT_CARD_EXPIRATION_DATE_LABEL_AND_ABBR" desc="text displayed in the Autofill Credit Card popup before the credit card expiration date and the abbreviated expiration date.">
+  <message name="IDS_AUTOFILL_CREDIT_CARD_EXPIRATION_DATE_LABEL_AND_ABBR" desc="Text displayed in the Autofill Credit Card popup before the credit card expiration date and the abbreviated expiration date.">
     , exp <ph name="EXPIRATION_DATE_ABBR">$1<ex>06/17</ex></ph>
   </message>
 
+  <message name="IDS_AUTOFILL_CREDIT_CARD_EXP_AND_LAST_USED_DATE" desc="Text displayed in the Autofill Credit Card popup to indicate the credit card expiration date and the date when this card was last used.">
+    Exp: <ph name="EXPIRATION_DATE_ABBR">$1<ex>06/17</ex></ph>, last used: <ph name="LAST_USED_DATE_NO_DETAIL">$2<ex>Jan 10</ex></ph>
+  </message>
+
+  <message name="IDS_AUTOFILL_CREDIT_CARD_LAST_USED_DATE" desc="Text displayed in the Autofill Credit Card popup to indicate the date when this card was last used.">
+    Last used: <ph name="LAST_USED_MONTH">$1<ex>Jan 10</ex></ph>
+  </message>
+
+  <message name="IDS_AUTOFILL_CREDIT_CARD_EXP_AND_ADDED_DATE" desc="Text displayed in the Autofill Credit Card popup to indicate the credit card expiration date and the date when this card was added to autofill.">
+    Exp: <ph name="EXPIRATION_DATE_ABBR">$1<ex>06/17</ex></ph>, added: <ph name="ADDED_TO_AUTOFILL_MONTH">$2<ex>Jan 10</ex></ph>
+  </message>
+
+  <message name="IDS_AUTOFILL_CREDIT_CARD_ADDED_DATE" desc="Text displayed in the Autofill Credit Card popup to indicate the date when this card was added to autofill.">
+    Added: <ph name="ADDED_TO_AUTOFILL_MONTH">$1<ex>Jan 10</ex></ph>
+  </message>
+
+  <message name="IDS_AUTOFILL_CREDIT_CARD_EXP_AND_LAST_USED_YEAR_AGO" desc="Text displayed in the Autofill Credit Card popup to indicate the credit card expiration date and this card was used in autofill more than a year ago.">
+    Exp: <ph name="EXPIRATION_DATE_ABBR">$1<ex>06/17</ex></ph>, last used over a year ago
+  </message>
+
+  <message name="IDS_AUTOFILL_CREDIT_CARD_LAST_USED_YEAR_AGO" desc="Text displayed in the Autofill Credit Card popup to indicate this card was used in autofill more than a year ago.">
+    Last used over a year ago
+  </message>
+
   <!-- Autofill credit card unmask prompt -->
   <message name="IDS_AUTOFILL_CARD_UNMASK_PROMPT_ERROR_TRY_AGAIN_CVC" desc="Error message that encourages the user to try to re-enter their credit card CVC after a previous failed attempt." formatter_data="android_java">
     Check your CVC and try again
   </message>
   <message name="IDS_AUTOFILL_CARD_UNMASK_PROMPT_ERROR_TRY_AGAIN_EXPIRATION_DATE" desc="Error message that encourages the user to try to re-enter their credit card expiration date after a previous failed attempt." formatter_data="android_java">
     Check your expiration date and try again
   </message>
   <message name="IDS_AUTOFILL_CARD_UNMASK_PROMPT_ERROR_TRY_AGAIN_CVC_AND_EXPIRATION" desc="Error message that encourages the user to try to re-enter their credit card expiration date and CVC after a previous failed attempt." formatter_data="android_java">
     Check your expiration date and CVC and try again
   </message>
@@ skipping 80 matching lines @@
   <message name="IDS_AUTOFILL_CARD_UNMASK_EXPIRATION_DATE_SEPARATOR" desc="Separator for a credit card expiration date, e.g. the slash in 05/16." formatter_data="android_java">
     /
   </message>
   <message name="IDS_AUTOFILL_CARD_UNMASK_NEW_CARD_LINK" desc="Text for link that prompts user to update their credit card after it may have been re-issued." formatter_data="android_java">
     New card?
   </message>
   <message name="IDS_AUTOFILL_DIALOG_PLACEHOLDER_CVC" desc="The placeholder/label text for credit card verification code in the requestAutocomplete dialog.">
     CVC
   </message>
 </grit-part>