Resurrect the cloud printer driver.

cloud_print/virtual_driver/win/virtual_driver_helpers.h

+// Copyright (c) 2011 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 CLOUD_PRINT_VIRTUAL_DRIVER_WIN_VIRTUAL_DRIVER_HELPERS_H_
+#define CLOUD_PRINT_VIRTUAL_DRIVER_WIN_VIRTUAL_DRIVER_HELPERS_H_
+
+#include <windows.h>
+
+#include "base/strings/string16.h"
+
+namespace base {
+class FilePath;
+}
+
+namespace cloud_print {
+
+// Convert an HRESULT to a localized string and display it in a message box.
+void DisplayWindowsMessage(HWND hwnd,
+                           HRESULT hr,
+                           const base::string16& caption);
+
+// Gets the standard install path for "version 3" print drivers.
+HRESULT GetPrinterDriverDir(base::FilePath* path);
+
+}  // namespace cloud_print
+
+#endif  // CLOUD_PRINT_VIRTUAL_DRIVER_WIN_VIRTUAL_DRIVER_HELPERS_H_