[Payments] Basic validation in the credit card editor.

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 126 matching lines @@
   <message translateable="false" name="IDS_AUTOFILL_SHOW_PREDICTIONS_TITLE" desc="The title for form elements when annotated with Autofill predictions.">
     overall type: <ph name="OVERALL_TYPE">$1<ex>NAME_FIRST</ex></ph>
     server type: <ph name="SERVER_TYPE">$2<ex>NAME_FIRST</ex></ph>
     heuristic type: <ph name="HEURISTIC_TYPE">$3<ex>NAME_FIRST</ex></ph>
     label: <ph name="LABEL">$4<ex>SOME LABEL</ex></ph>
     parseable name: <ph name="PARSEABLE_NAME">$5<ex>SOME_NAME</ex></ph>
     field signature: <ph name="FIELD_SIGNATURE">$6<ex>12345678</ex></ph>
     form signature: <ph name="FORM_SIGNATURE">$7<ex>1234567812345678</ex></ph>
   </message>
 
-  <!-- Autofill dialog: legal documents -->
-  <message name="IDS_AUTOFILL_DIALOG_PRIVACY_POLICY_LINK" desc="The text of an extra link that is appended to the end of whatever other legal documents need to be accepted or updated.">
-    Privacy Policy
-  </message>
-
   <if expr="_google_chrome">
     <message name="IDS_AUTOFILL_OPTIONS_POPUP" desc="The text displayed in the Autofill popup to direct the user to the Autofill settings UI.">
      Chrome Autofill settings...
    </message>
   </if>
   <if expr="not _google_chrome">
     <message name="IDS_AUTOFILL_OPTIONS_POPUP" desc="The label of the text displayed in the Autofill popup to direct the user to the Autofill settings UI.">
       Chromium Autofill settings...
     </message>
   </if>
@@ skipping 178 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>
 
+  <!-- Validation -->
+  <message name="IDS_AUTOFILL_VALIDATION_INVALID_NAME" desc="Message displayed to user when name validation fails.">
+    Invalid name.
+  </message>
+  <message name="IDS_AUTOFILL_VALIDATION_INVALID_CREDIT_CARD_NUMBER" desc="Message displayed to user when credit card number validation fails.">
+    Invalid card number.
+  </message>
+  <message name="IDS_AUTOFILL_VALIDATION_INVALID_CREDIT_CARD_EXPIRATION_DATE" desc="Message displayed to user when the credit card expiration date is in an invalid format.">
+    Invalid expiration date.
+  </message>
+  <message name="IDS_AUTOFILL_VALIDATION_INVALID_CREDIT_CARD_EXPIRATION_YEAR" desc="Message displayed to user when the credit card expiration year is in an invalid format.">
+    Invalid expiration year.
+  </message>
+  <message name="IDS_AUTOFILL_VALIDATION_INVALID_CREDIT_CARD_EXPIRATION_MONTH" desc="Message displayed to user when the credit card expiration month is in an invalid format.">
+    Invalid expiration month.
+  </message>
+  <message name="IDS_AUTOFILL_VALIDATION_INVALID_CREDIT_CARD_EXPIRED" desc="Message displayed to user when the credit card is expired.">
+    The card is expired.
+  </message>
+
   <!-- Payment Request -->
   <message name="IDS_PAYMENT_REQUEST_ORDER_SUMMARY_SECTION_NAME" desc="The name of the Order Summary section in the Payment Sheet of the Payment Request dialog.">
     Order summary
   </message>
   <message name="IDS_PAYMENT_REQUEST_ORDER_SUMMARY_SECTION_TOTAL_FORMAT" desc="The format specifier of the Total label in the Order Summary section of the Payment Sheet of the Payment Request dialog.">
     <ph name="TOTAL_LABEL">$1<ex>Total</ex></ph> <ph name="CURRENCY_CODE">$2<ex>USD</ex></ph> <ph name="FORMATTED_TOTAL_AMOUNT">$3<ex>$ 12.34</ex></ph>
   </message>
   <message name="IDS_PAYMENT_REQUEST_PAYMENT_METHOD_SECTION_NAME" desc="The name of the Payment Method section in the Payment Sheet of the Payment Request dialog.">
     Payment
   </message>
   <message name="IDS_PAYMENT_REQUEST_ORDER_SUMMARY_SHEET_TOTAL_FORMAT" desc="The format specifier of the Total label in the Order Summary Sheet of the Payment Request dialog.">
     <ph name="CURRENCY_CODE">$1<ex>USD</ex></ph> <ph name="FORMATTED_TOTAL_AMOUNT">$2<ex>$ 12.34</ex></ph>
   </message>
   <message name="IDS_PAYMENT_REQUEST_SHIPPING_SECTION_NAME" desc="The name of the Shipping Address section in the Payment Sheet of the Payment Request dialog.">
     Shipping address
   </message>
   <message name="IDS_PAYMENT_REQUEST_CONTACT_INFO_SECTION_NAME" desc="The name of the Contact Info section in the Payment Sheet of the Payment Request dialog.">
     Contact info
   </message>
 </grit-part>