Remove a couple of unneeded forwarded decls.

chrome/browser/browser_theme_provider.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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_BROWSER_THEME_PROVIDER_H_
 #define CHROME_BROWSER_BROWSER_THEME_PROVIDER_H_
 #pragma once
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "app/theme_provider.h"
 #include "base/non_thread_safe.h"
 #include "base/ref_counted.h"
 
 namespace color_utils {
   struct HSL;
 }
 
 class BrowserThemePack;
 class BrowserThemeProviderTest;
-class DictionaryValue;
 class Extension;
 class FilePath;
-class PrefService;
 class Profile;
 class ResourceBundle;
 
 #ifdef __OBJC__
 @class NSString;
 // Sent whenever the browser theme changes.  Object => NSValue wrapping the
 // BrowserThemeProvider that changed.
 extern "C" NSString* const kBrowserThemeDidChangeNotification;
 #endif  // __OBJC__
 
@@ skipping 230 matching lines @@
 
   scoped_refptr<BrowserThemePack> theme_pack_;
 
   // The number of infobars currently displayed.
   int number_of_infobars_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserThemeProvider);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_THEME_PROVIDER_H_