[Web Payments] Implement placeholders in the shipping options row

components/payments_strings.grdp

Index: components/payments_strings.grdp
diff --git a/components/payments_strings.grdp b/components/payments_strings.grdp
index 424c4849132a3935895ddacdd549c2228e464895..5a7d166bc29a70b5fd39bd89e1e2552ba57e334f 100644
--- a/components/payments_strings.grdp
+++ b/components/payments_strings.grdp
@@ -291,6 +291,10 @@
     </message>
   </if>
 
+  <message name="IDS_PAYMENT_REQUEST_CHOOSE_AN_ADDRESS" desc="The string displayed as a placeholder in the shipping options row if no shipping address is selected">
+    Choose an address
+  </message>
+
   <!-- Payment Request section preview strings. They are slightly different on desktop and android because the pluralization and formatting code behaves differently. -->
   <if expr="not is_android">
     <message name="IDS_PAYMENT_REQUEST_PAYMENT_METHODS_PREVIEW" desc="This is a snippet of a payment method a user has saved to Chrome, plus an indication of the number of additional payment methods the user has saved. Its function is to show the user has payment methods that can be used to complete a payment, and thus doesn't have to type the entire payment method. [ICU Syntax]">