Add LockLayoutManager responsible for lock container (login/lock).

ash/wm/window_state.h

 // Copyright 2013 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_WM_WINDOW_STATE_H_
 #define ASH_WM_WINDOW_STATE_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/drag_details.h"
 #include "ash/wm/wm_types.h"
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "ui/aura/window_observer.h"
 #include "ui/base/ui_base_types.h"
 
 namespace aura {
 class Window;
 }
 
 namespace gfx {
 class Rect;
 }
 
 namespace ash {
 class WorkspaceLayoutManager;
+class LockWindowState;
 class MaximizeModeWindowState;
 
 namespace wm {
 class WindowStateDelegate;
 class WindowStateObserver;
 class WMEvent;
 
 // WindowState manages and defines ash specific window state and
 // behavior. Ash specific per-window state (such as ones that controls
 // window manager behavior) and ash specific window behavior (such as
@@ skipping 258 matching lines @@
   const DragDetails* drag_details() const { return drag_details_.get(); }
   DragDetails* drag_details() { return drag_details_.get(); }
 
   // aura::WindowObserver overrides:
   virtual void OnWindowPropertyChanged(aura::Window* window,
                                        const void* key,
                                        intptr_t old) OVERRIDE;
 
  private:
   friend class DefaultState;
+  friend class ash::LockWindowState;
   friend class ash::MaximizeModeWindowState;
   FRIEND_TEST_ALL_PREFIXES(WindowAnimationsTest, CrossFadeToBounds);
 
   WindowStateDelegate* delegate() { return delegate_.get(); }
 
   // Returns the window's current show state.
   ui::WindowShowState GetShowState() const;
 
   // Sets the window's bounds in screen coordinates.
   void SetBoundsInScreen(const gfx::Rect& bounds_in_screen);
@@ skipping 67 matching lines @@
 ASH_EXPORT WindowState* GetWindowState(aura::Window* window);
 
 // const version of GetWindowState.
 ASH_EXPORT const WindowState*
 GetWindowState(const aura::Window* window);
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_STATE_H_