Aura: Tooltips

ui/aura/client/aura_constants.h

 // Copyright (c) 2011 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_
 #pragma once
 
 #include "ui/aura/aura_export.h"
 
@@ skipping 22 matching lines @@
 // that should be displayed under the window.  If unset, no shadow is displayed.
 AURA_EXPORT extern const char kShadowTypeKey[];
 
 // A property key to store the drag and drop client for the desktop. The type of
 // the value is |aura::DragDropClient*|.
 AURA_EXPORT extern const char kDesktopDragDropClientKey[];
 
 // A property key to store the drag and drop delegate for a window. The type of
 // the value is |aura::WindowDragDropDelegate*|.
 AURA_EXPORT extern const char kDragDropDelegateKey[];
+
+// A property key to store the tooltip client for the desktop. The type of
+// the value is |aura::TooltipClient*|.
+AURA_EXPORT extern const char kDesktopTooltipClientKey[];
 }  // namespace aura
 
 #endif  // UI_AURA_CLIENT_AURA_CONSTANTS_H_