Move some more WM functionality down into ash.

ui/aura_shell/toplevel_layout_manager.h

-// Copyright (c) 2011 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 UI_AURA_SHELL_TOPLEVEL_LAYOUT_MANAGER_H_
-#define UI_AURA_SHELL_TOPLEVEL_LAYOUT_MANAGER_H_
-#pragma once
-
-#include <set>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ui/aura/layout_manager.h"
-#include "ui/aura/window_observer.h"
-#include "ui/aura_shell/aura_shell_export.h"
-
-namespace aura_shell {
-namespace internal {
-
-class ShelfLayoutManager;
-
-// ToplevelLayoutManager is the LayoutManager installed on a container that
-// hosts what the shell considers to be top-level windows. It is used if the
-// WorkspaceManager is not enabled. ToplevelLayoutManager listens for changes to
-// kShowStateKey and resizes the window appropriately.
-class AURA_SHELL_EXPORT ToplevelLayoutManager : public aura::LayoutManager,
-                                                public aura::WindowObserver {
- public:
-  ToplevelLayoutManager();
-  virtual ~ToplevelLayoutManager();
-
-  void set_shelf(ShelfLayoutManager* shelf) { shelf_ = shelf; }
-
-  // LayoutManager overrides:
-  virtual void OnWindowResized() OVERRIDE;
-  virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE;
-  virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE;
-  virtual void OnChildWindowVisibilityChanged(aura::Window* child,
-                                              bool visibile) OVERRIDE;
-  virtual void SetChildBounds(aura::Window* child,
-                              const gfx::Rect& requested_bounds) OVERRIDE;
-
-  // WindowObserver overrides:
-  virtual void OnWindowPropertyChanged(aura::Window* window,
-                                       const char* name,
-                                       void* old) OVERRIDE;
-
- private:
-  typedef std::set<aura::Window*> Windows;
-
-  // Updates the visibility of the shelf based on if there are any full screen
-  // windows.
-  void UpdateShelfVisibility();
-
-  // Set of windows we're listening to.
-  Windows windows_;
-
-  // May be NULL if we're not using a shelf.
-  ShelfLayoutManager* shelf_;
-
-  DISALLOW_COPY_AND_ASSIGN(ToplevelLayoutManager);
-};
-
-}  // namespace aura_shell
-}  // namespace internal
-
-#endif  // UI_AURA_SHELL_TOPLEVEL_LAYOUT_MANAGER_H_