Disables showing tooltips while a system menu is showing on windows

ui/views/widget/desktop_aura/desktop_root_window_host_win.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_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_WIN_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_WIN_H_
 
 #include "ui/aura/client/animation_host.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/desktop_aura/desktop_root_window_host.h"
 #include "ui/views/win/hwnd_message_handler_delegate.h"
 
 namespace aura {
 namespace client {
 class DragDropClient;
 class FocusClient;
+class ScopedTooltipDisabler;
 }
 }
 
 namespace views {
 class DesktopCursorClient;
 class DesktopDragDropClientWin;
 class HWNDMessageHandler;
 
 namespace corewm {
 class TooltipWin;
@@ skipping 166 matching lines @@
   virtual void HandleInputLanguageChange(DWORD character_set,
                                          HKL input_language_id) OVERRIDE;
   virtual bool HandlePaintAccelerated(const gfx::Rect& invalid_rect) OVERRIDE;
   virtual void HandlePaint(gfx::Canvas* canvas) OVERRIDE;
   virtual bool HandleTooltipNotify(int w_param,
                                    NMHDR* l_param,
                                    LRESULT* l_result) OVERRIDE;
   virtual void HandleTooltipMouseMove(UINT message,
                                       WPARAM w_param,
                                       LPARAM l_param) OVERRIDE;
+  virtual void HandleMenuLoop(bool in_menu_loop) OVERRIDE;
   virtual bool PreHandleMSG(UINT message,
                             WPARAM w_param,
                             LPARAM l_param,
                             LRESULT* result) OVERRIDE;
   virtual void PostHandleMSG(UINT message,
                              WPARAM w_param,
                              LPARAM l_param) OVERRIDE;
 
   Widget* GetWidget();
   const Widget* GetWidget() const;
@@ skipping 48 matching lines @@
   // Init time, before the Widget has created the NonClientView.
   bool has_non_client_view_;
 
   // Owned by TooltipController, but we need to forward events to it so we keep
   // a reference.
   corewm::TooltipWin* tooltip_;
 
   // State of the cursor.
   bool is_cursor_visible_;
 
+  scoped_ptr<aura::client::ScopedTooltipDisabler> tooltip_disabler_;
+
   DISALLOW_COPY_AND_ASSIGN(DesktopRootWindowHostWin);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_WIN_H_