Small cleanup for ChromeBrowserMain:

chrome/browser/toolkit_extra_parts.h

Index: chrome/browser/toolkit_extra_parts.h
===================================================================
--- chrome/browser/toolkit_extra_parts.h	(revision 210624)
+++ chrome/browser/toolkit_extra_parts.h	(working copy)
@@ -1,32 +0,0 @@
-// Copyright (c) 2012 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_TOOLKIT_EXTRA_PARTS_H_
-#define CHROME_BROWSER_TOOLKIT_EXTRA_PARTS_H_
-
-#include "build/build_config.h"
-
-class ChromeBrowserMainParts;
-
-namespace chrome {
-
-#if defined(TOOLKIT_GTK)
-void AddGtkToolkitExtraParts(ChromeBrowserMainParts* main_parts);
-#endif
-
-#if defined(TOOLKIT_VIEWS)
-void AddViewsToolkitExtraParts(ChromeBrowserMainParts* main_parts);
-#endif
-
-#if defined(USE_ASH)
-void AddAshToolkitExtraParts(ChromeBrowserMainParts* main_parts);
-#endif
-
-#if defined(USE_AURA)
-void AddAuraToolkitExtraParts(ChromeBrowserMainParts* main_parts);
-#endif
-
-}  // namespace chrome
-
-#endif  // CHROME_BROWSER_TOOLKIT_EXTRA_PARTS_H_