Create a common base class for all the webdatas

chrome/browser/webdata/web_data_service_factory.cc

Index: chrome/browser/webdata/web_data_service_factory.cc
diff --git a/chrome/browser/webdata/web_data_service_factory.cc b/chrome/browser/webdata/web_data_service_factory.cc
index 142919f7237ae7a463095b214bb7d312aa8de8ac..48621e26276636fd25ab6cb6f05b580aa906e64e 100644
--- a/chrome/browser/webdata/web_data_service_factory.cc
+++ b/chrome/browser/webdata/web_data_service_factory.cc
@@ -29,7 +29,7 @@ scoped_refptr<WebDataService> WebDataServiceWrapper::GetWebData() {
 }
 
 // static
-scoped_ptr<AutofillWebDataService> AutofillWebDataService::FromBrowserContext(
+scoped_refptr<AutofillWebDataService> AutofillWebDataService::FromBrowserContext(
     content::BrowserContext* context) {
   // For this service, the implicit/explicit distinction doesn't
   // really matter; it's just used for a DCHECK.  So we currently
@@ -38,10 +38,10 @@ scoped_ptr<AutofillWebDataService> AutofillWebDataService::FromBrowserContext(
       static_cast<Profile*>(context), Profile::EXPLICIT_ACCESS);
 
   if (service.get()) {
-    return scoped_ptr<AutofillWebDataService>(
+    return scoped_refptr<AutofillWebDataService>(
         new AutofillWebDataServiceImpl(service));
   } else {
-    return scoped_ptr<AutofillWebDataService>(NULL);
+    return scoped_refptr<AutofillWebDataService>(NULL);
   }
 }