Move the mouse wheel utils from views to ui\base\win, to get rid of some views dependencies in co...

views/focus/focus_util_win.h

-// Copyright (c) 2011 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 VIEWS_FOCUS_FOCUS_UTIL_WIN_H_
-#define VIEWS_FOCUS_FOCUS_UTIL_WIN_H_
-#pragma once
-
-#include <windows.h>
-
-#include "views/views_export.h"
-
-namespace ui {
-class ViewProp;
-}
-
-namespace views {
-
-// Marks the passed |hwnd| as supporting mouse-wheel message rerouting.
-// We reroute the mouse wheel messages to such HWND when they are under the
-// mouse pointer (but are not the active window). Callers own the returned
-// object.
-VIEWS_EXPORT ui::ViewProp* SetWindowSupportsRerouteMouseWheel(HWND hwnd);
-
-// Forwards mouse wheel messages to the window under it.
-// Windows sends mouse wheel messages to the currently active window.
-// This causes a window to scroll even if it is not currently under the mouse
-// wheel. The following code gives mouse wheel messages to the window under the
-// mouse wheel in order to scroll that window. This is arguably a better user
-// experience.  The returns value says whether the mouse wheel message was
-// successfully redirected.
-VIEWS_EXPORT bool RerouteMouseWheel(HWND window, WPARAM w_param,
-                                    LPARAM l_param);
-
-}   // namespace views
-
-#endif  // VIEWS_FOCUS_FOCUS_UTIL_WIN_H_