Actually delete databases in CookiesTreeModel.

base/file_util_win.cc

Index: base/file_util_win.cc
diff --git a/base/file_util_win.cc b/base/file_util_win.cc
index 9265ce23fc600b30826773a4937d5b6ce1e08621..32b6811514c10aa9c66284bc6d6546b439d2b8ac 100644
--- a/base/file_util_win.cc
+++ b/base/file_util_win.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
@@ -589,6 +589,16 @@ bool GetFileInfo(const FilePath& file_path, FileInfo* results) {
   return true;
 }
 
+bool SetLastModifiedTime(const FilePath& file_path, base::Time last_modified) {
+  FILETIME timestamp(last_modified.ToFileTime());
+  ScopedHandle file_handle(
+      CreateFile(file_path.value().c_str(), FILE_WRITE_ATTRIBUTES,
+                 FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
+                 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL));
+  BOOL ret = SetFileTime(file_handle.Get(), NULL, &timestamp, &timestamp);
+  return ret != 0;
+}
+
 FILE* OpenFile(const FilePath& filename, const char* mode) {
   std::wstring w_mode = ASCIIToWide(std::string(mode));
   FILE* file;