Remove "2" suffixes from options2 code.

chrome/browser/ui/webui/options2/chromeos/wallpaper_source.h

 // 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_UI_WEBUI_OPTIONS2_CHROMEOS_WALLPAPER_SOURCE2_H_
-#define CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_WALLPAPER_SOURCE2_H_
+#ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_WALLPAPER_SOURCE_H_
+#define CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_WALLPAPER_SOURCE_H_
 #pragma once
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
@@ skipping 35 matching lines @@
   scoped_refptr<WallpaperEncodingOperation> wallpaper_encoding_op_;
 
   base::WeakPtrFactory<WallpaperImageSource> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WallpaperImageSource);
 };
 
 }  // namespace options2
 }  // namespace chromeos
 
-#endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_WALLPAPER_SOURCE2_H_
+#endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_WALLPAPER_SOURCE_H_