Unify window fullscreen and minimizing implementation

ash/common/wm/wm_types.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_COMMON_WM_WM_TYPES_H_
 #define ASH_COMMON_WM_WM_TYPES_H_
 
 #include "ash/ash_export.h"
 #include "ui/base/ui_base_types.h"
 
@@ skipping 10 matching lines @@
   WINDOW_STATE_TYPE_DEFAULT = 0,
 
   // Normal represents a state where the position/size has been
   // specified by a use.
   WINDOW_STATE_TYPE_NORMAL,
   WINDOW_STATE_TYPE_MINIMIZED,
   WINDOW_STATE_TYPE_MAXIMIZED,
   WINDOW_STATE_TYPE_INACTIVE,
   WINDOW_STATE_TYPE_FULLSCREEN,
   WINDOW_STATE_TYPE_DOCKED,
+  WINDOW_STATE_TYPE_PREVIOUS,
   WINDOW_STATE_TYPE_END,  // to avoid using SHOW_STATE_END
 
   // Ash specific states:
 
   WINDOW_STATE_TYPE_LEFT_SNAPPED,
   WINDOW_STATE_TYPE_RIGHT_SNAPPED,
 
   WINDOW_STATE_TYPE_DOCKED_MINIMIZED,
 
   // A window is in this state when it is automatically placed and
@@ skipping 16 matching lines @@
 
 // Returns true if |type| is WINDOW_STATE_TYPE_MAXIMIZED,
 // WINDOW_STATE_TYPE_FULLSCREEN or WINDOW_STATE_TYPE_PINNED.
 ASH_EXPORT bool IsMaximizedOrFullscreenOrPinnedWindowStateType(
     WindowStateType type);
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_WM_TYPES_H_