Add policy for ash launcher auto-hide behavior

ash/shell.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_SHELL_H_
 #define ASH_SHELL_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 333 matching lines @@
 
   // TODO(oshima): Define an interface to access shelf/launcher
   // state, or just use Launcher.
 
   // Sets/gets the shelf auto-hide behavior on |root_window|.
   void SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
                                 aura::RootWindow* root_window);
   ShelfAutoHideBehavior GetShelfAutoHideBehavior(
       aura::RootWindow* root_window) const;
 
-  bool IsShelfAutoHideMenuHideChecked(aura::RootWindow* root);
-  ShelfAutoHideBehavior GetToggledShelfAutoHideBehavior(
-      aura::RootWindow* root_window);
-
   // Sets/gets shelf's alignment on |root_window|.
   void SetShelfAlignment(ShelfAlignment alignment,
                          aura::RootWindow* root_window);
   ShelfAlignment GetShelfAlignment(aura::RootWindow* root_window);
 
   // Dims or undims the screen.
   void SetDimming(bool should_dim);
 
   // Creates a modal background (a partially-opaque fullscreen window)
   // on all displays for |window|.
@@ skipping 190 matching lines @@
 
   // For testing only: simulate that a modal window is open
   bool simulate_modal_window_open_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_