[autofill] Sync server card and address metadata.

components/autofill/core/browser/webdata/autofill_change.cc

Index: components/autofill/core/browser/webdata/autofill_change.cc
diff --git a/components/autofill/core/browser/webdata/autofill_change.cc b/components/autofill/core/browser/webdata/autofill_change.cc
index c02bdd8464d8476d974f1cfd0a04e2c60f55af10..c0922f7d469c26b3599f09150fb7b909fd7eadce 100644
--- a/components/autofill/core/browser/webdata/autofill_change.cc
+++ b/components/autofill/core/browser/webdata/autofill_change.cc
@@ -36,4 +36,22 @@ bool AutofillProfileChange::operator==(
          (type() != REMOVE) ? *profile() == *change.profile() : true;
 }
 
+CreditCardChange::CreditCardChange(Type type,
+                                   const std::string& key,
+                                   const CreditCard* card)
+    : GenericAutofillChange<std::string>(type, key), card_(card) {
+  DCHECK(type == ADD ? (card && card->guid() == key) : true);
+  DCHECK(type == UPDATE ? (card && card->guid() == key) : true);
+  DCHECK(type == REMOVE ? !card : true);
+}
+
+CreditCardChange::~CreditCardChange() {
+}
+
+bool CreditCardChange::operator==(const CreditCardChange& change) const {
+  return type() == change.type() && key() == change.key() && (type() != REMOVE)
+             ? *card() == *change.card()
+             : true;
+}
+
 }  // namespace autofill