Unify window fullscreen and minimizing implementation

ui/wm/core/window_util.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 UI_WM_CORE_WINDOW_UTIL_H_
 #define UI_WM_CORE_WINDOW_UTIL_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "ui/wm/wm_export.h"
 
 namespace aura {
 class Window;
 }
 
 namespace ui {
 class Layer;
 class LayerOwner;
 class LayerTreeOwner;
 }
 
 namespace wm {
 
 WM_EXPORT void ActivateWindow(aura::Window* window);
 WM_EXPORT void DeactivateWindow(aura::Window* window);
 WM_EXPORT bool IsActiveWindow(aura::Window* window);
 WM_EXPORT bool CanActivateWindow(aura::Window* window);
+WM_EXPORT void SetWindowFullscreen(aura::Window* window, bool fullscreen);
 
 // Retrieves the activatable window for |window|. The ActivationClient makes
 // this determination.
 WM_EXPORT aura::Window* GetActivatableWindow(aura::Window* window);
 
 // Retrieves the toplevel window for |window|. The ActivationClient makes this
 // determination.
 WM_EXPORT aura::Window* GetToplevelWindow(aura::Window* window);
 
 // Returns the existing Layer for |root| (and all its descendants) and creates
@@ skipping 23 matching lines @@
 WM_EXPORT void RemoveTransientChild(aura::Window* parent, aura::Window* child);
 
 // Returns true if |window| has |ancestor| as a transient ancestor. A transient
 // ancestor is found by following the transient parent chain of the window.
 WM_EXPORT bool HasTransientAncestor(const aura::Window* window,
                                     const aura::Window* ancestor);
 
 }  // namespace wm
 
 #endif  // UI_WM_CORE_WINDOW_UTIL_H_