Clean-up temporary files/folders in firefox importer tests.

chrome/test/file_test_utils.h

+// Copyright (c) 2006-2009 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.
+
+#ifndef CHROME_TEST_FILE_TEST_UTILS_H_
+#define CHROME_TEST_FILE_TEST_UTILS_H_
+
+#include "base/file_path.h"
+#include "base/file_util.h"
+
+// Auto deletes file/folder when it goes out-of-scope. This is useful for tests
+// to cleanup files/folder automatically.
+class FileAutoDeleter {
+ public:
+  explicit FileAutoDeleter(const FilePath& path);
+  ~FileAutoDeleter();
+
+  const FilePath& path() { return path_; }
+ private:
+  FilePath path_;
+  DISALLOW_EVIL_CONSTRUCTORS(FileAutoDeleter);
+};
+
+#endif  // CHROME_TEST_FILE_TEST_UTILS_H_