Delete obviously unneeded forward declarations in chrome/browser/*.h.

chrome/browser/browser_theme_pack.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_PACK_H_
 #define CHROME_BROWSER_BROWSER_THEME_PACK_H_
 #pragma once
 
 #include <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
 #include "base/ref_counted.h"
 #include "gfx/color_utils.h"
 #include "chrome/common/extensions/extension.h"
 
-class BrowserThemeProviderTest;
 namespace base {
 class DataPack;
 }
 class DictionaryValue;
 class FilePath;
 class RefCountedMemory;
 
 // An optimized representation of a theme, backed by a mmapped DataPack.
 //
 // The idea is to pre-process all images (tinting, compositing, etc) at theme
@@ skipping 189 matching lines @@
   // in |image_memory_| that are in |prepared_images_| or vice versa.
   ImageCache prepared_images_;
 
   // Loaded images. These are loaded from |image_memory_| or the |data_pack_|.
   mutable ImageCache loaded_images_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserThemePack);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_THEME_PACK_H_