Disables showing tooltips while a system menu is showing on windows

ui/views/win/hwnd_message_handler.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/win/hwnd_message_handler.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include "base/bind.h"
@@ skipping 370 matching lines @@
       previous_cursor_(NULL),
       active_mouse_tracking_flags_(0),
       is_right_mouse_pressed_on_caption_(false),
       lock_updates_count_(0),
       ignore_window_pos_changes_(false),
       last_monitor_(NULL),
       use_layered_buffer_(false),
       layered_alpha_(255),
       waiting_for_redraw_layered_window_contents_(false),
       is_first_nccalc_(true),
+      menu_depth_(0),
       autohide_factory_(this),
       id_generator_(0) {
 }
 
 HWNDMessageHandler::~HWNDMessageHandler() {
   delegate_ = NULL;
   // Prevent calls back into this class via WNDPROC now that we've been
   // destroyed.
   ClearUserData();
 }
@@ skipping 959 matching lines @@
                                                     LPARAM l_param) {
   if (!delegate_->IsWidgetWindow()) {
     SetMsgHandled(FALSE);
     return 0;
   }
 
   FrameTypeChanged();
   return 0;
 }
 
+void HWNDMessageHandler::OnEnterMenuLoop(BOOL from_track_popup_menu) {
+  if (menu_depth_++ == 0)
+    delegate_->HandleMenuLoop(true);
+}
+
 void HWNDMessageHandler::OnEnterSizeMove() {
   delegate_->HandleBeginWMSizeMove();
   SetMsgHandled(FALSE);
 }
 
 LRESULT HWNDMessageHandler::OnEraseBkgnd(HDC dc) {
   // Needed to prevent resize flicker.
   return 1;
 }
 
+void HWNDMessageHandler::OnExitMenuLoop(BOOL is_shortcut_menu) {
+  if (--menu_depth_ == 0)
+    delegate_->HandleMenuLoop(false);
+  DCHECK_GE(0, menu_depth_);
+}
+
 void HWNDMessageHandler::OnExitSizeMove() {
   delegate_->HandleEndWMSizeMove();
   SetMsgHandled(FALSE);
 }
 
 void HWNDMessageHandler::OnGetMinMaxInfo(MINMAXINFO* minmax_info) {
   gfx::Size min_window_size;
   gfx::Size max_window_size;
   delegate_->GetMinMaxSize(&min_window_size, &max_window_size);
 
@@ skipping 851 matching lines @@
   SetMsgHandled(FALSE);
 }
 
 void HWNDMessageHandler::HandleTouchEvents(const TouchEvents& touch_events) {
   base::WeakPtr<HWNDMessageHandler> ref(weak_factory_.GetWeakPtr());
   for (size_t i = 0; i < touch_events.size() && ref; ++i)
     delegate_->HandleTouchEvent(touch_events[i]);
 }
 
 }  // namespace views