Rename the download to its final name only after the download is finished

chrome/browser/download/download_util.h

 // Copyright (c) 2009 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.
 //
 // Download utilities.
 
 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
 
 #include <set>
@@ skipping 160 matching lines @@
                  int render_process_host_id,
                  int render_view_id,
                  URLRequestContextGetter* request_context_getter);
 
 // Tells the resource dispatcher host to cancel a download request.
 // Must be called on the IO thread.
 void CancelDownloadRequest(ResourceDispatcherHost* rdh,
                            int render_process_id,
                            int request_id);
 
+// Same as GetUniquePathNumber, except that it also checks the existence
+// of its .crdownload intermediate path.
+// If |path| does not exist, 0 is returned.  If it fails to find such
+// a number, -1 is returned.
+int GetUniquePathNumberWithCrDownload(const FilePath& path);
+
+// Returns a .crdownload intermediate path for the |suggested_path|.
+FilePath GetCrDownloadPath(const FilePath& suggested_path);
 
 }  // namespace download_util
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_