Revert of Make WindowState::CanMinimize() take into account WidgetDelegate::CanMinimize()

ui/aura/client/aura_constants.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_AURA_CLIENT_AURA_CONSTANTS_H_
 #define UI_AURA_CLIENT_AURA_CONSTANTS_H_
 
 #include "ui/aura/aura_export.h"
 #include "ui/aura/window.h"
 #include "ui/base/ui_base_types.h"
@@ skipping 10 matching lines @@
 // A property key to store always-on-top flag.
 AURA_EXPORT extern const WindowProperty<bool>* const kAlwaysOnTopKey;
 
 // A property key to store whether animations are disabled for the window. Type
 // of value is an int.
 AURA_EXPORT extern const WindowProperty<bool>* const kAnimationsDisabledKey;
 
 // A property key to store the can-maximize flag.
 AURA_EXPORT extern const WindowProperty<bool>* const kCanMaximizeKey;
 
-// A property key to store the can-minimize flag.
-AURA_EXPORT extern const WindowProperty<bool>* const kCanMinimizeKey;
-
 // A property key to store the can-resize flag.
 AURA_EXPORT extern const WindowProperty<bool>* const kCanResizeKey;
 
 // A property key to store if a window is a constrained window or not.
 AURA_EXPORT extern const WindowProperty<bool>* const kConstrainedWindowKey;
 
 // A property key to indicate that a window should show that it deserves
 // attention.
 AURA_EXPORT extern const aura::WindowProperty<bool>* const kDrawAttentionKey;
 
@@ skipping 20 matching lines @@
 // See ui/base/ui_base_types.h for its definition.
 AURA_EXPORT extern const WindowProperty<ui::WindowShowState>* const
     kShowStateKey;
 
 // Alphabetical sort.
 
 }  // namespace client
 }  // namespace aura
 
 #endif  // UI_AURA_CLIENT_AURA_CONSTANTS_H_