Unify window fullscreen and minimizing implementation

ash/common/wm/wm_types.cc

 // 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.
 
 #include "ash/common/wm/wm_types.h"
 
 #include "base/logging.h"
 
 namespace ash {
 namespace wm {
@@ skipping 22 matching lines @@
     case WINDOW_STATE_TYPE_DOCKED_MINIMIZED:
       return ui::SHOW_STATE_MINIMIZED;
     case WINDOW_STATE_TYPE_MAXIMIZED:
       return ui::SHOW_STATE_MAXIMIZED;
     case WINDOW_STATE_TYPE_INACTIVE:
       return ui::SHOW_STATE_INACTIVE;
     case WINDOW_STATE_TYPE_FULLSCREEN:
     case WINDOW_STATE_TYPE_PINNED:
     case WINDOW_STATE_TYPE_TRUSTED_PINNED:
       return ui::SHOW_STATE_FULLSCREEN;
+    case WINDOW_STATE_TYPE_PREVIOUS:
+      return ui::SHOW_STATE_PREVIOUS;
     case WINDOW_STATE_TYPE_END:
       NOTREACHED();
   }
   NOTREACHED();
   return ui::SHOW_STATE_DEFAULT;
 }
 
 bool IsMaximizedOrFullscreenOrPinnedWindowStateType(WindowStateType type) {
   return type == WINDOW_STATE_TYPE_MAXIMIZED ||
          type == WINDOW_STATE_TYPE_FULLSCREEN ||
          type == WINDOW_STATE_TYPE_PINNED ||
          type == WINDOW_STATE_TYPE_TRUSTED_PINNED;
 }
 
 }  // namespace wm
 }  // namespace ash