Disables showing tooltips while a system menu is showing on windows

ui/views/widget/native_widget_win.cc

 // 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.
 
 #include "ui/views/widget/native_widget_win.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include <algorithm>
@@ skipping 834 matching lines @@
   return false;
 }
 
 void NativeWidgetWin::HandleTooltipMouseMove(UINT message,
                                              WPARAM w_param,
                                              LPARAM l_param) {
   if (tooltip_manager_.get())
     tooltip_manager_->OnMouse(message, w_param, l_param);
 }
 
+void NativeWidgetWin::HandleMenuLoop(bool in_menu_loop) {
+}
+
 bool NativeWidgetWin::PreHandleMSG(UINT message,
                                    WPARAM w_param,
                                    LPARAM l_param,
                                    LRESULT* result) {
   return false;
 }
 
 void NativeWidgetWin::PostHandleMSG(UINT message,
                                     WPARAM w_param,
                                     LPARAM l_param) {
@@ skipping 190 matching lines @@
 // static
 bool NativeWidgetPrivate::IsTouchDown() {
   // This currently isn't necessary because we're not generating touch events on
   // windows.  When we do, this will need to be updated.
   return false;
 }
 
 }  // namespace internal
 
 }  // namespace views