[Web Payments] Correct pluralization of "more items"

components/payments_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <grit-part>
 
   <message name="IDS_PAYMENTS_TITLE" desc="Title of the dialog that presents a request for payment for some good or service [Desktop and iOS only].">
     Your Payment
   </message>
   <message name="IDS_PAYMENTS_NAME_FIELD_IN_CONTACT_DETAILS" desc="The label for text input field containing the full name of a person. [CHAR-LIMIT=32]" formatter_data="android_java">
     Name
   </message>
   <message name="IDS_PAYMENTS_SAVE_CARD_TO_DEVICE_CHECKBOX" desc="The label for the checkbox that enables the user to save a credit card to their device, for example, on their phone." formatter_data="android_java">
@@ skipping 180 matching lines @@
   </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_ORDER_SUMMARY_MORE_ITEMS" desc="The label in the Order Summary section of the Payment Sheet that indicates how many display items are hidden.">
-    <ph name="ITEM_COUNT">$1<ex>2</ex></ph> more items...
+  <message name="IDS_PAYMENT_REQUEST_ORDER_SUMMARY_MORE_ITEMS" desc="The label in the Order Summary section of the Payment Sheet that indicates how many display items are hidden. [ICU Syntax]">
+    {MORE_ITEMS, plural,
+      =1 {<ph name="ITEM_COUNT">#<ex>1</ex></ph> more item&#x2026;}
+      other {<ph name="ITEM_COUNT">#<ex>2</ex></ph> more items&#x2026;}}
   </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>
 
   <!-- Shipping address in web payments API -->
   <message name="IDS_PAYMENTS_SHIPPING_SUMMARY_LABEL" desc="The title for the section of shipping information. Shipping is used for packages and things that are mailed. In American English, “shipping” is differentiated from “delivery”. “Delivery” is used, for example, for food delivery." formatter_data="android_java">
@@ skipping 60 matching lines @@
 
   <message name="IDS_UTILITY_PROCESS_PAYMENT_MANIFEST_PARSER_NAME" desc="The name of the utility process used for parsing payment manifest files.">
     Payment Manifest Parser
   </message>
   <if expr="is_android">
     <message name="IDS_EXTERNAL_PAYMENT_APP_LEAVE_INCOGNITO_WARNING" desc="Alert dialog text warning the user that incognito mode does not continue into external payment apps." formatter_data="android_java">
       Leaving incognito mode to pay via an external application. Continue?
     </message>
   </if>
 </grit-part>