Show user data dialog earlier on Windows.

chrome/browser/user_data_dir_extractor.h

+// Copyright (c) 2013 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_BROWSER_USER_DATA_DIR_EXTRACTOR_H_
+#define CHROME_BROWSER_USER_DATA_DIR_EXTRACTOR_H_
+
+namespace base {
+class FilePath;
+}
+
+namespace content{
+struct MainFunctionParams;
+}
+
+namespace chrome {
+
+// Returns the user data dir. Must be called prior to InitializeLocalState().
+base::FilePath GetUserDataDir(const content::MainFunctionParams& parameters);
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_USER_DATA_DIR_EXTRACTOR_H_