Disables showing tooltips while a system menu is showing on windows

ui/views/win/hwnd_message_handler.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_WIN_HWND_MESSAGE_HANDLER_H_
 #define UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_
 
 #include <windows.h>
 #include <atlbase.h>
 #include <atlapp.h>
@@ skipping 324 matching lines @@
     // This list is in _ALPHABETICAL_ order! OR I WILL HURT YOU.
     MSG_WM_ACTIVATEAPP(OnActivateApp)
     MSG_WM_APPCOMMAND(OnAppCommand)
     MSG_WM_CANCELMODE(OnCancelMode)
     MSG_WM_CAPTURECHANGED(OnCaptureChanged)
     MSG_WM_CLOSE(OnClose)
     MSG_WM_COMMAND(OnCommand)
     MSG_WM_CREATE(OnCreate)
     MSG_WM_DESTROY(OnDestroy)
     MSG_WM_DISPLAYCHANGE(OnDisplayChange)
+    MSG_WM_ENTERMENULOOP(OnEnterMenuLoop)
+    MSG_WM_EXITMENULOOP(OnExitMenuLoop)
     MSG_WM_ENTERSIZEMOVE(OnEnterSizeMove)
     MSG_WM_ERASEBKGND(OnEraseBkgnd)
     MSG_WM_EXITSIZEMOVE(OnExitSizeMove)
     MSG_WM_GETMINMAXINFO(OnGetMinMaxInfo)
     MSG_WM_INITMENU(OnInitMenu)
     MSG_WM_INPUTLANGCHANGE(OnInputLangChange)
     MSG_WM_KILLFOCUS(OnKillFocus)
     MSG_WM_MOVE(OnMove)
     MSG_WM_MOVING(OnMoving)
     MSG_WM_NCCALCSIZE(OnNCCalcSize)
@@ skipping 21 matching lines @@
   //             WindowImpl.
   BOOL OnAppCommand(HWND window, short command, WORD device, int keystate);
   void OnCancelMode();
   void OnCaptureChanged(HWND window);
   void OnClose();
   void OnCommand(UINT notification_code, int command, HWND window);
   LRESULT OnCreate(CREATESTRUCT* create_struct);
   void OnDestroy();
   void OnDisplayChange(UINT bits_per_pixel, const CSize& screen_size);
   LRESULT OnDwmCompositionChanged(UINT msg, WPARAM w_param, LPARAM l_param);
+  void OnEnterMenuLoop(BOOL from_track_popup_menu);
   void OnEnterSizeMove();
   LRESULT OnEraseBkgnd(HDC dc);
+  void OnExitMenuLoop(BOOL is_shortcut_menu);
   void OnExitSizeMove();
   void OnGetMinMaxInfo(MINMAXINFO* minmax_info);
   LRESULT OnGetObject(UINT message, WPARAM w_param, LPARAM l_param);
   LRESULT OnImeMessages(UINT message, WPARAM w_param, LPARAM l_param);
   void OnInitMenu(HMENU menu);
   void OnInputLangChange(DWORD character_set, HKL input_language_id);
   LRESULT OnKeyEvent(UINT message, WPARAM w_param, LPARAM l_param);
   void OnKillFocus(HWND focused_window);
   LRESULT OnMouseActivate(UINT message, WPARAM w_param, LPARAM l_param);
   LRESULT OnMouseRange(UINT message, WPARAM w_param, LPARAM l_param);
@@ skipping 116 matching lines @@
 
   // Set to true when waiting for RedrawLayeredWindowContents().
   bool waiting_for_redraw_layered_window_contents_;
 
   // True the first time nccalc is called on a sizable widget
   bool is_first_nccalc_;
 
   // Copy of custom window region specified via SetRegion(), if any.
   base::win::ScopedRegion custom_window_region_;
 
+  // If > 0 indicates a menu is running (we're showing a native menu).
+  int menu_depth_;
+
   // A factory used to lookup appbar autohide edges.
   base::WeakPtrFactory<HWNDMessageHandler> autohide_factory_;
 
   // Generates touch-ids for touch-events.
   ui::SequentialIDGenerator id_generator_;
 
   DISALLOW_COPY_AND_ASSIGN(HWNDMessageHandler);
 };
 
 // This window property if set on the window does not activate the window for a
 // touch based WM_MOUSEACTIVATE message.
 const wchar_t kIgnoreTouchMouseActivateForWindow[] =
     L"Chrome.IgnoreMouseActivate";
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_