sync: Merge GU retry logic into normal GU

sync/engine/get_updates_delegate.h

Index: sync/engine/get_updates_delegate.h
diff --git a/sync/engine/get_updates_delegate.h b/sync/engine/get_updates_delegate.h
index 825c0610c7d29632a5d3edaca9971930ea567d2b..9ebc6d8fc7b46f486e66b3f0a4233f53bde02aa3 100644
--- a/sync/engine/get_updates_delegate.h
+++ b/sync/engine/get_updates_delegate.h
@@ -54,23 +54,6 @@ class SYNC_EXPORT_PRIVATE NormalGetUpdatesDelegate : public GetUpdatesDelegate {
   const sessions::NudgeTracker& nudge_tracker_;
 };
 
-// Functionality specific to the retry GetUpdate request.
-class SYNC_EXPORT_PRIVATE RetryGetUpdatesDelegate : public GetUpdatesDelegate {
- public:
-  RetryGetUpdatesDelegate();
-  virtual ~RetryGetUpdatesDelegate();
-
-  virtual void HelpPopulateGuMessage(
-      sync_pb::GetUpdatesMessage* get_updates) const OVERRIDE;
-
-  virtual void ApplyUpdates(
-      sessions::StatusController* status,
-      UpdateHandlerMap* update_handler_map) const OVERRIDE;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(RetryGetUpdatesDelegate);
-};
-
 // Functionality specific to the configure GetUpdate request.
 class SYNC_EXPORT_PRIVATE ConfigureGetUpdatesDelegate
     : public GetUpdatesDelegate {