[autofill] Sync server card and address metadata.

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

Index: components/autofill/core/browser/webdata/autofill_webdata_service_observer.h
diff --git a/components/autofill/core/browser/webdata/autofill_webdata_service_observer.h b/components/autofill/core/browser/webdata/autofill_webdata_service_observer.h
index f4333e58bc66942fae73284eab6a0d9acb550366..e8bf79ca8a98e2ed42805de5b2f4065aed0e1fdd 100644
--- a/components/autofill/core/browser/webdata/autofill_webdata_service_observer.h
+++ b/components/autofill/core/browser/webdata/autofill_webdata_service_observer.h
@@ -18,6 +18,14 @@ class AutofillWebDataServiceObserverOnDBThread {
   // in the WebDatabase.
   virtual void AutofillProfileChanged(const AutofillProfileChange& change) {}
 
+  // Called on DB thread when a CreditCard has been added/removed/updated in the
+  // WebDatabase.
+  virtual void CreditCardChanged(const CreditCardChange& change) {}
+
+  // Called on DB thread when multiple Autofill entries have been modified by
+  // Sync.
+  virtual void AutofillMultipleChanged() {}
+
  protected:
   virtual ~AutofillWebDataServiceObserverOnDBThread() {}
 };