Support dragging a virtual file out of the browser.

base/file_util.h

 // 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.
 
 // This file contains utility functions for dealing with the local
 // filesystem.
 
 #ifndef BASE_FILE_UTIL_H_
 #define BASE_FILE_UTIL_H_
 
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 // directory's contents.  Passing true to recursive deletes
 // subdirectories and their contents as well.
 // Returns true if successful, false otherwise.
 //
 // WARNING: USING THIS WITH recursive==true IS EQUIVALENT
 //          TO "rm -rf", SO USE WITH CAUTION.
 bool Delete(const FilePath& path, bool recursive);
 // Deprecated temporary compatibility function.
 bool Delete(const std::wstring& path, bool recursive);
 
+#if defined(OS_WIN)
+// Schedules to delete the given path, whether it's a file or a directory, until
+// the operating system is restarted.
+// Note:
+// 1) The file/directory to be deleted should exist in a temp folder.
+// 2) The directory to be deleted must be empty.
+bool DeleteAfterReboot(const FilePath& path);
+#endif
+
 // Moves the given path, whether it's a file or a directory.
 // If a simple rename is not possible, such as in the case where the paths are
 // on different volumes, this will attempt to copy and delete. Returns
 // true for success.
 bool Move(const FilePath& from_path, const FilePath& to_path);
 
 // Renames file |from_path| to |to_path|. Both paths must be on the same
 // volume, or the function will fail. Destination file will be created
 // if it doesn't exist. Prefer this function over Move when dealing with
 // temporary files. On Windows it preserves attributes of the target file.
@@ skipping 402 matching lines @@
     const FilePath& source_file_path,
     const FilePath& target_file_path);
 
 // Returns whether the file has been modified since a particular date.
 bool HasFileBeenModifiedSince(const FileEnumerator::FindInfo& find_info,
                               const base::Time& cutoff_time);
 
 }  // namespace file_util
 
 #endif  // BASE_FILE_UTIL_H_