[autofill] Sync server card and address metadata.

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

Index: components/autofill/core/browser/webdata/autofill_change.h
diff --git a/components/autofill/core/browser/webdata/autofill_change.h b/components/autofill/core/browser/webdata/autofill_change.h
index 0e856570f94d66efa173cfb37dacb385df5051eb..80281f5bd636f73bd1faf644b03d641b2e8965bf 100644
--- a/components/autofill/core/browser/webdata/autofill_change.h
+++ b/components/autofill/core/browser/webdata/autofill_change.h
@@ -5,6 +5,7 @@
 #ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOFILL_CHANGE_H__
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOFILL_CHANGE_H__
 
+#include <string>
 #include <vector>
 
 #include "components/autofill/core/browser/webdata/autofill_entry.h"
@@ -12,9 +13,10 @@
 namespace autofill {
 
 class AutofillProfile;
+class CreditCard;
 
 // For classic Autofill form fields, the KeyType is AutofillKey.
-// Autofill++ types such as AutofillProfile and CreditCard simply use an int.
+// Autofill++ types such as AutofillProfile and CreditCard simply use a string.
 template <typename KeyType>
 class GenericAutofillChange {
  public:
@@ -70,6 +72,25 @@ class AutofillProfileChange : public GenericAutofillChange<std::string> {
   const AutofillProfile* profile_;
 };
 
+// Change notification details for credit card changes.
+class CreditCardChange : public GenericAutofillChange<std::string> {
+ public:
+  // The |type| input specifies the change type.  The |key| input is the key,
+  // which is expected to be the GUID identifying the |card|.
+  // When |type| == ADD, |card| should be non-NULL.
+  // When |type| == UPDATE, |card| should be non-NULL.
+  // When |type| == REMOVE, |card| should be NULL.
+  CreditCardChange(Type type, const std::string& key, const CreditCard* card);
+  ~CreditCardChange() override;
+
+  const CreditCard* card() const { return card_; }
+  bool operator==(const CreditCardChange& change) const;
+
+ private:
+  // Weak reference, can be NULL.
+  const CreditCard* card_;
+};
+
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOFILL_CHANGE_H__