Cleanup: Remove unneeded forward declarations from chrome/browser/chromeos.

chrome/browser/chromeos/customization_document.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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_CUSTOMIZATION_DOCUMENT_H_
 #define CHROME_BROWSER_CHROMEOS_CUSTOMIZATION_DOCUMENT_H_
 #pragma once
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/timer.h"
 #include "base/values.h"
 #include "content/public/common/url_fetcher_delegate.h"
 #include "googleurl/src/gurl.h"
 
 class FilePath;
 class PrefService;
 
 namespace base {
 class DictionaryValue;
-class ListValue;
 }
 
 namespace chromeos {
 
 namespace system {
 class StatisticsProvider;
 }  // system
 
 // Base class for OEM customization document classes.
 class CustomizationDocument {
@@ skipping 133 matching lines @@
 
   // How many times we already tried to fetch customization manifest file.
   int num_retries_;
 
   DISALLOW_COPY_AND_ASSIGN(ServicesCustomizationDocument);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_CUSTOMIZATION_DOCUMENT_H_