Remove dependency of WebData on notifications

components/webdata/common/web_data_service_base.h

Index: components/webdata/common/web_data_service_base.h
diff --git a/components/webdata/common/web_data_service_base.h b/components/webdata/common/web_data_service_base.h
index 9e0867dd8fa0c8743c585ba9e10485516e108496..9af44d7beb0c499ecf310841c8f3d486f25e2455 100644
--- a/components/webdata/common/web_data_service_base.h
+++ b/components/webdata/common/web_data_service_base.h
@@ -12,7 +12,6 @@
 #include "components/webdata/common/web_database_observer.h"
 #include "components/webdata/common/webdata_export.h"
 #include "content/public/browser/browser_thread.h"
-#include "content/public/browser/notification_source.h"
 #include "sql/init_status.h"
 
 class WebDatabase;
@@ -58,10 +57,6 @@ class WEBDATA_EXPORT WebDataServiceBase
   // WebDataServiceConsumer is about to be deleted.
   virtual void CancelRequest(Handle h);
 
-  // Returns the notification source for this service. This may use a
-  // pointer other than this object's |this| pointer.
-  virtual content::NotificationSource GetNotificationSource();
-
   // Shutdown the web data service. The service can no longer be used after this
   // call.
   virtual void ShutdownOnUIThread();