Make IsLocalDuplicateOfServerCard separator-insensitive

BUG=none

Review URL: https://codereview.chromium.org/791053009

Cr-Commit-Position: refs/heads/master@{#310723}

components/autofill/core/browser/credit_card.cc

@@ -599,7 +599,7 @@ bool CreditCard::IsLocalDuplicateOfServerCard(const CreditCard& other) const {
     return true;
 
   if (other.record_type() == FULL_SERVER_CARD)
-    return number_ == other.number_;
+    return StripSeparators(number_) == StripSeparators(other.number_);
 
   // For masked cards, this is the best we can do to compare card numbers.
   return TypeAndLastFourDigits() == other.TypeAndLastFourDigits();

components/autofill/core/browser/credit_card_unittest.cc

@@ -186,6 +186,9 @@ TEST(CreditCardTest, Compare) {
     { LOCAL_CARD, "", "423456789012", "", "",
       MASKED_SERVER_CARD, "John Dillinger", "9012", "01", "2010", kMasterCard,
       false },
+    { LOCAL_CARD, "John Dillinger", "4234-5678-9012", "01", "2010",
+      FULL_SERVER_CARD, "John Dillinger", "423456789012", "01", "2010", nullptr,
+      true },
   };
 
   for (size_t i = 0; i < arraysize(test_cases); ++i) {