Revert of Move token handle obtaining to UserSessionManager

chrome/browser/chromeos/login/existing_user_controller.h

Index: chrome/browser/chromeos/login/existing_user_controller.h
diff --git a/chrome/browser/chromeos/login/existing_user_controller.h b/chrome/browser/chromeos/login/existing_user_controller.h
index 0eb01b89eade16b911f5c5776b7896a3cdd45e4e..eea1471d577f449390b1d7cea5eac70e9f533773 100644
--- a/chrome/browser/chromeos/login/existing_user_controller.h
+++ b/chrome/browser/chromeos/login/existing_user_controller.h
@@ -18,6 +18,7 @@
 #include "base/timer/timer.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/login/session/user_session_manager.h"
+#include "chrome/browser/chromeos/login/signin/token_handle_util.h"
 #include "chrome/browser/chromeos/login/ui/login_display.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
@@ -242,6 +243,13 @@
   // Callback invoked when |oauth2_token_initializer_| has finished.
   void OnOAuth2TokensFetched(bool success, const UserContext& user_context);
 
+  // Callback invoked when |token_handle_util_| has finished.
+  void OnTokenHandleObtained(const user_manager::UserID& id,
+                             TokenHandleUtil::TokenHandleStatus status);
+
+  // Returns |true| if token handles should be used on this device.
+  bool TokenHandlesEnabled();
+
   // Public session auto-login timer.
   scoped_ptr<base::OneShotTimer<ExistingUserController> > auto_login_timer_;
 
@@ -330,6 +338,7 @@
       bootstrap_user_context_initializer_;
 
   scoped_ptr<OAuth2TokenInitializer> oauth2_token_initializer_;
+  scoped_ptr<TokenHandleUtil> token_handle_util_;
 
   FRIEND_TEST_ALL_PREFIXES(ExistingUserControllerTest, ExistingUserLogin);