Add ChromeBrowserMainExtraParts for non main parts.

chrome/browser/chrome_browser_parts_gtk.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.
-
-// Contains functions used by BrowserMain() that are gtk-specific.
-
-#ifndef CHROME_BROWSER_CHROME_BROWSER_PARTS_GTK_H_
-#define CHROME_BROWSER_CHROME_BROWSER_PARTS_GTK_H_
-#pragma once
-
-#include "base/compiler_specific.h"
-#include "content/public/browser/browser_main_parts.h"
-
-class ChromeBrowserPartsGtk : public content::BrowserMainParts {
- public:
-  ChromeBrowserPartsGtk();
-
-  virtual void PreEarlyInitialization() OVERRIDE;
-  virtual void PostEarlyInitialization() OVERRIDE;
-  virtual void ToolkitInitialized() OVERRIDE;
-  virtual void PreMainMessageLoopStart() OVERRIDE;
-  virtual void PostMainMessageLoopStart() OVERRIDE;
-  virtual void PreMainMessageLoopRun() OVERRIDE;
-  virtual bool MainMessageLoopRun(int* result_code) OVERRIDE;
-  virtual void PostMainMessageLoopRun() OVERRIDE;
-
-  static void ShowMessageBox(const char* message);
-
- private:
-  void DetectRunningAsRoot();
-};
-
-#endif  // CHROME_BROWSER_CHROME_BROWSER_PARTS_GTK_H_