Tray elements behave appropriately on the multiple signin screen (more like lock screen)

ash/test/shell_test_api.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_TEST_SHELL_TEST_API_H_
 #define ASH_TEST_SHELL_TEST_API_H_
 
 #include "base/basictypes.h"
 
 namespace wm {
 class InputMethodEventFilter;
 }  // namespace wm
 
 namespace ash {
 class AppListController;
 class AshNativeCursorManager;
 class DragDropController;
 class MaximizeModeWindowManager;
 class RootWindowLayoutManager;
+class SessionStateDelegate;
 class ScreenPositionController;
 class ShelfDelegate;
 class ShelfModel;
 class Shell;
 class SystemGestureEventFilter;
 class WorkspaceController;
 
 namespace test {
 
 // Accesses private data from a Shell for testing.
 class ShellTestApi {
 public:
   explicit ShellTestApi(Shell* shell);
 
   RootWindowLayoutManager* root_window_layout();
   ::wm::InputMethodEventFilter* input_method_event_filter();
   SystemGestureEventFilter* system_gesture_event_filter();
   WorkspaceController* workspace_controller();
   ScreenPositionController* screen_position_controller();
   AshNativeCursorManager* ash_native_cursor_manager();
   ShelfModel* shelf_model();
   DragDropController* drag_drop_controller();
   AppListController* app_list_controller();
   MaximizeModeWindowManager* maximize_mode_window_manager();
   void DisableDisplayConfiguratorAnimation();
 
   // Set ShelfDelegate.
   void SetShelfDelegate(ShelfDelegate* delegate);
 
+  // Set SessionStateDelegate.
+  void SetSessionStateDelegate(SessionStateDelegate* session_state_delegate);
+
  private:
   Shell* shell_;  // not owned
 
   DISALLOW_COPY_AND_ASSIGN(ShellTestApi);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_SHELL_TEST_API_H_