Split Autofill webdata

chrome/browser/webdata/web_database_service.h

Index: chrome/browser/webdata/web_database_service.h
diff --git a/chrome/browser/webdata/web_database_service.h b/chrome/browser/webdata/web_database_service.h
index 75a4f4d81d6b0860169d84f2f098a8362929cef5..9493e4f7892b575989d3884a32ba4f6119fa63a3 100644
--- a/chrome/browser/webdata/web_database_service.h
+++ b/chrome/browser/webdata/web_database_service.h
@@ -41,7 +41,8 @@ class WebDataServiceConsumer;
 //
 ////////////////////////////////////////////////////////////////////////////////
 
-class WebDatabaseService {
+class WebDatabaseService : public base::RefCountedThreadSafe<WebDatabaseService,
+    content::BrowserThread::DeleteOnUIThread> {
  public:
   typedef base::Callback<scoped_ptr<WDTypedResult>(WebDatabase*)> ReadTask;
   typedef base::Callback<WebDatabase::State(WebDatabase*)> WriteTask;
@@ -50,8 +51,6 @@ class WebDatabaseService {
   // Takes the path to the WebDatabase file.
   explicit WebDatabaseService(const base::FilePath& path);
 
-  virtual ~WebDatabaseService();
-
   // Initializes the web database service. Takes a callback which will return
   // the status of the DB after the init.
   virtual void LoadDatabase(const InitCallback& callback);
@@ -84,6 +83,12 @@ class WebDatabaseService {
   virtual void CancelRequest(WebDataServiceBase::Handle h);
 
  private:
+  friend struct content::BrowserThread::DeleteOnThread<
+      content::BrowserThread::UI>;
+  friend class base::DeleteHelper<WebDatabaseService>;
+
+  virtual ~WebDatabaseService();
+
   base::FilePath path_;
 
   // The primary owner is |WebDatabaseService| but is refcounted because