Cleanup: Remove unneeded forward declarations from chrome/browser/ui/views.

chrome/browser/ui/views/extensions/browser_action_drag_data.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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_UI_VIEWS_EXTENSIONS_BROWSER_ACTION_DRAG_DATA_H_
 #define CHROME_BROWSER_UI_VIEWS_EXTENSIONS_BROWSER_ACTION_DRAG_DATA_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 
 #if defined(TOOLKIT_VIEWS)
 #include "ui/base/dragdrop/os_exchange_data.h"
 #endif
 
-class BrowserActionButton;
-class FilePath;
 class Pickle;
 class Profile;
 
 class BrowserActionDragData {
  public:
   BrowserActionDragData();
   BrowserActionDragData(const std::string& id, int index);
 
   const std::string& id() const { return id_; }
 
@@ skipping 25 matching lines @@
   // The index of the view being dragged.
   size_t index_;
 
   // The MIME type for the clipboard format for BrowserActionDragData.
   static const char* kClipboardFormatString;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionDragData);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_EXTENSIONS_BROWSER_ACTION_DRAG_DATA_H_