Converts MruWindowTracker to work with common types

ash/wm/window_util.cc

 // 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.
 
 #include "ash/wm/window_util.h"
 
 #include <vector>
 
 #include "ash/ash_constants.h"
 #include "ash/aura/wm_window_aura.h"
@@ skipping 40 matching lines @@
 }
 
 aura::Window* GetActivatableWindow(aura::Window* window) {
   return ::wm::GetActivatableWindow(window);
 }
 
 bool CanActivateWindow(aura::Window* window) {
   return ::wm::CanActivateWindow(window);
 }
 
-bool IsWindowMinimized(aura::Window* window) {
-  return ash::wm::GetWindowState(window)->IsMinimized();
-}
-
 bool IsWindowUserPositionable(aura::Window* window) {
   return GetWindowState(window)->IsUserPositionable();
 }
 
 void CenterWindow(aura::Window* window) {
   wm::WMEvent event(wm::WM_EVENT_CENTER);
   wm::GetWindowState(window)->OnWMEvent(&event);
 }
 
 bool MoveWindowToEventRoot(aura::Window* window, const ui::Event& event) {
@@ skipping 41 matching lines @@
       if (!container->layout_manager())
         container->SetLayoutManager(new SnapToPixelLayoutManager(container));
     } else {
       InstallSnapLayoutManagerToContainers(container);
     }
   }
 }
 
 }  // namespace wm
 }  // namespace ash