Remove even more ATL dependencies.

views/widget/tooltip_manager.cc

 // Copyright (c) 2006-2008 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 "views/widget/tooltip_manager.h"
 
+#include <windowsx.h>
 #include <limits>
 
 #include "app/gfx/text_elider.h"
 #include "app/l10n_util.h"
 #include "app/l10n_util_win.h"
 #include "app/win_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "views/view.h"
 #include "views/widget/root_view.h"
@@ skipping 421 matching lines @@
     keyboard_tooltip_hwnd_ = NULL;
   }
 }
 
 void TooltipManager::DestroyKeyboardTooltipWindow(HWND window_to_destroy) {
   if (keyboard_tooltip_hwnd_ == window_to_destroy)
     HideKeyboardTooltip();
 }
 
 }  // namespace views