Prevent existing card number to be used for new credit cards in the Payment Request

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_PHONE_FIELD_IN_CONTACT_DETAILS" desc="The label for text input field containing a phone number. [CHAR-LIMIT=32]">
@@ skipping 143 matching lines @@
   </message>
   <message name="IDS_PAYMENTS_VALIDATION_INVALID_CREDIT_CARD_EXPIRATION_MONTH" desc="Message displayed to user when the credit card expiration month is in an invalid format.">
     Enter a valid expiration month
   </message>
   <message name="IDS_PAYMENTS_VALIDATION_INVALID_CREDIT_CARD_EXPIRED" desc="Message displayed to user when the credit card is expired.">
     This card is expired
   </message>
   <message name="IDS_PAYMENTS_VALIDATION_UNSUPPORTED_CREDIT_CARD_TYPE" desc="Message displayed to user when the credit card type (e.g visa, mastercard) is not supported for this transaction.">
     This type of card isn’t supported
   </message>
+  <message name="IDS_PAYMENTS_VALIDATION_ALREADY_USED_CREDIT_CARD_NUMBER" desc="Message displayed to user when the credit card number has already been used in this user profile.">

[Mathieu, 2017/05/24 02:40:20]

would consider a better description for translators, such as: ... when the
credit card number they have entered corresponds to an existing credit card
number in their user profile.

[MAD, 2017/05/24 14:10:08]

Done.

+    This card number is already used
+  </message>
   <message name="IDS_PAYMENTS_REQUIRED_FIELD_MESSAGE" desc="The text that informs the user that '*' character indicates an input field that is required. The '*' character should not be changed." formatter_data="android_java">
      * Field is required
   </message>
   <message name="IDS_PAYMENTS_FIELD_REQUIRED_VALIDATION_MESSAGE" desc="The text that informs the user that an input field is required. “Required” is an adjective." formatter_data="android_java">
     Required field
   </message>
   <message name="IDS_PAYMENTS_PHONE_INVALID_VALIDATION_MESSAGE" desc="The text that informs the user that the phone number they have entered is not valid." formatter_data="android_java">
     Enter a valid phone number
   </message>
   <message name="IDS_PAYMENTS_EMAIL_INVALID_VALIDATION_MESSAGE" desc="The text that informs the user that the email address they have entered is not valid." formatter_data="android_java">
@@ skipping 150 matching lines @@
        =1 {<ph name="SHIPPING_OPTION_PREVIEW">{1}<ex>standard shipping</ex></ph> and <ph name="NUMBER_OF_ADDITIONAL_SHIPPING_OPTIONS">{2}<ex>1</ex></ph> more}
        other {<ph name="SHIPPING_OPTION_PREVIEW">{1}<ex>standard shipping</ex></ph> and <ph name="NUMBER_OF_ADDITIONAL_SHIPPING_OPTIONS">{2}<ex>2</ex></ph> more}}
     </message>
     <message name="IDS_PAYMENT_REQUEST_CONTACTS_PREVIEW" desc="This is a snippet of a contact a user has saved to Chrome, plus an indication of the number of additional contacts the user has saved. Its function is to show the user has contacts that can be used to complete a purchase, and thus doesn't have to type the entire contact info. [ICU Syntax]">
      {CONTACT, plural,
        =1 {<ph name="CONTACT_PREVIEW">{1}<ex>Jerry, 438-123-1922</ex></ph> and <ph name="NUMBER_OF_ADDITIONAL_CONTACTS">{2}<ex>1</ex></ph> more}
        other {<ph name="CONTACT_PREVIEW">{1}<ex>Jerry, 438-123-1922</ex></ph> and <ph name="NUMBER_OF_ADDITIONAL_CONTACTS">{2}<ex>2</ex></ph> more}}
     </message>
   </if>
 </grit-part>