Create a common base class for all the webdatas

chrome/browser/webdata/autofill_web_data_service_impl.h

Index: chrome/browser/webdata/autofill_web_data_service_impl.h
diff --git a/chrome/browser/webdata/autofill_web_data_service_impl.h b/chrome/browser/webdata/autofill_web_data_service_impl.h
index dc80cb06cf0411d21aa6063a0027d05a4672ff66..0898478a4d344a94dc3dba49befc1e6df141ce0d 100644
--- a/chrome/browser/webdata/autofill_web_data_service_impl.h
+++ b/chrome/browser/webdata/autofill_web_data_service_impl.h
@@ -15,7 +15,6 @@ class WebDataService;
 class AutofillWebDataServiceImpl : public AutofillWebDataService {
  public:
   explicit AutofillWebDataServiceImpl(scoped_refptr<WebDataService> service);
-  virtual ~AutofillWebDataServiceImpl();
 
   // AutofillWebData implementation.
   virtual void AddFormFields(
@@ -39,9 +38,8 @@ class AutofillWebDataServiceImpl : public AutofillWebDataService {
   virtual WebDataServiceBase::Handle
       GetCreditCards(WebDataServiceConsumer* consumer) OVERRIDE;
 
-  // WebDataServiceBase implementation.
-  virtual void CancelRequest(Handle h) OVERRIDE;
-  virtual content::NotificationSource GetNotificationSource() OVERRIDE;
+ protected:
+  virtual ~AutofillWebDataServiceImpl();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AutofillWebDataServiceImpl);