Revert of [M53 cherry-pick] Migrate ArcUserDataService into ArcAuthService.

chrome/browser/chromeos/arc/arc_auth_service.h

Index: chrome/browser/chromeos/arc/arc_auth_service.h
diff --git a/chrome/browser/chromeos/arc/arc_auth_service.h b/chrome/browser/chromeos/arc/arc_auth_service.h
index 3b48bfd09bb23032bb6dac6c036935b2ada13b28..ea509fb2978ae9412d661f984399fc46cec5026a 100644
--- a/chrome/browser/chromeos/arc/arc_auth_service.h
+++ b/chrome/browser/chromeos/arc/arc_auth_service.h
@@ -181,15 +181,6 @@
   // Stops ARC without changing ArcEnabled preference.
   void StopArc();
 
-  // StopArc(), then EnableArc(). Between them data clear may happens.
-  // This is a special method to support enterprise device lost case.
-  // This can be called only when ARC is running.
-  void StopAndEnableArc();
-
-  // Removes the data if ARC is stopped. Otherwise, queue to remove the data
-  // on ARC is stopped.
-  void RemoveArcData();
-
   // Returns current page that has to be shown in OptIn UI.
   UIPage ui_page() const { return ui_page_; }
 
@@ -210,7 +201,6 @@
   void StartAndroidManagementClient();
   void CheckAndroidManagement(bool background_mode);
   void StartArcIfSignedIn();
-  void OnArcDataRemoved(bool success);
 
   // Unowned pointer. Keeps current profile.
   Profile* profile_ = nullptr;
@@ -229,7 +219,6 @@
   UIPage ui_page_ = UIPage::NO_PAGE;
   base::string16 ui_page_status_;
   bool clear_required_ = false;
-  bool reenable_arc_ = false;
   bool waiting_for_reply_ = false;
 
   std::unique_ptr<ArcAuthContext> context_;