Don't ever attempt to upload credit cards whose numbers match.

components/autofill/core/browser/personal_data_manager.cc

Index: components/autofill/core/browser/personal_data_manager.cc
diff --git a/components/autofill/core/browser/personal_data_manager.cc b/components/autofill/core/browser/personal_data_manager.cc
index d2e69a1444aa8923f9c404ddf111898a7f4adef4..cf312a0c74478e19691cae6787f295781ace53a1 100644
--- a/components/autofill/core/browser/personal_data_manager.cc
+++ b/components/autofill/core/browser/personal_data_manager.cc
@@ -1395,8 +1395,12 @@ bool PersonalDataManager::ImportCreditCard(
   }
 
   // Also don't offer to save if we already have this stored as a server card.
+  // We only check the number because if the new card has the same number as the
+  // server card, upload is guaranteed to fail. There's no mechanism for entries
+  // with the same number but different names or expiration dates as there is
+  // for local cards.
   for (const CreditCard* card : server_credit_cards_) {
-    if (candidate_credit_card.IsLocalDuplicateOfServerCard(*card))
+    if (candidate_credit_card.HasSameNumberAs(*card))
       return false;
   }