Support dragging a virtual file out of the browser.

base/file_util_win.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 "base/file_util.h"
 
 #include <windows.h>
 #include <propvarutil.h>
 #include <shellapi.h>
 #include <shlobj.h>
@@ skipping 80 matching lines @@
   file_operation.pFrom = double_terminated_path;
   file_operation.fFlags = FOF_NOERRORUI | FOF_SILENT | FOF_NOCONFIRMATION;
   if (!recursive)
     file_operation.fFlags |= FOF_NORECURSION | FOF_FILESONLY;
   int err = SHFileOperation(&file_operation);
   // Some versions of Windows return ERROR_FILE_NOT_FOUND when
   // deleting an empty directory.
   return (err == 0 || err == ERROR_FILE_NOT_FOUND);
 }
 
+bool DeleteAfterReboot(const FilePath& path) {
+  if (path.value().length() >= MAX_PATH)
+    return false;
+
+  return MoveFileEx(path.value().c_str(), NULL,
+                    MOVEFILE_DELAY_UNTIL_REBOOT |
+                        MOVEFILE_REPLACE_EXISTING) != FALSE;
+}
+
 bool Move(const FilePath& from_path, const FilePath& to_path) {
   // NOTE: I suspect we could support longer paths, but that would involve
   // analyzing all our usage of files.
   if (from_path.value().length() >= MAX_PATH ||
       to_path.value().length() >= MAX_PATH) {
     return false;
   }
   if (MoveFileEx(from_path.value().c_str(), to_path.value().c_str(),
                  MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING) != 0)
     return true;
@@ skipping 728 matching lines @@
 }
 
 bool HasFileBeenModifiedSince(const FileEnumerator::FindInfo& find_info,
                               const base::Time& cutoff_time) {
   long result = CompareFileTime(&find_info.ftLastWriteTime,
                                 &cutoff_time.ToFileTime());
   return result == 1 || result == 0;
 }
 
 }  // namespace file_util