Don't try to use compositor to display dialog before compositor is initialized

chrome/browser/ui/views/simple_message_box_win.h

+// Copyright 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_UI_VIEWS_SIMPLE_MESSAGE_BOX_WIN_H_
+#define CHROME_BROWSER_UI_VIEWS_SIMPLE_MESSAGE_BOX_WIN_H_
+
+#include "chrome/browser/ui/simple_message_box.h"
+
+namespace chrome {
+
+MessageBoxResult NativeShowMessageBox(HWND parent,
+                                      const string16& title,
+                                      const string16& message,
+                                      MessageBoxType type);
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_UI_VIEWS_SIMPLE_MESSAGE_BOX_WIN_H_