Actually delete databases in CookiesTreeModel.

base/file_util_win.cc

-// 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.
 
 #include "base/file_util.h"
 
 #include <windows.h>
 #include <propvarutil.h>
 #include <shellapi.h>
 #include <shlobj.h>
 #include <time.h>
@@ skipping 570 matching lines @@
   size.LowPart = attr.nFileSizeLow;
   results->size = size.QuadPart;
 
   results->is_directory =
       (attr.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
   results->last_modified = base::Time::FromFileTime(attr.ftLastWriteTime);
 
   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;
   if (_wfopen_s(&file, filename.value().c_str(), w_mode.c_str()) != 0) {
     return NULL;
   }
   return file;
 }
 
 FILE* OpenFile(const std::string& filename, const char* mode) {
@@ skipping 258 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