Move DragDownload() out of download_util.h

chrome/browser/download/download_util.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 CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
-#define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
-
-#include "ui/gfx/native_widget_types.h"
-
-namespace content {
-class DownloadItem;
-}
-
-namespace gfx {
-class Image;
-}
-
-namespace download_util {
-
-// Helper function for download views to use when acting as a drag source for a
-// DownloadItem. If |icon| is NULL, no image will be accompany the drag. |view|
-// is only required for Mac OS X, elsewhere it can be NULL.
-void DragDownload(const content::DownloadItem* download,
-                  gfx::Image* icon,
-                  gfx::NativeView view);
-
-}  // namespace download_util
-
-#endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_