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

chrome/browser/ui/views/tabs/tab.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_UI_VIEWS_TABS_TAB_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_
 #pragma once
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/views/tabs/base_tab.h"
 #include "ui/gfx/point.h"
 
 namespace ui {
 class MultiAnimation;
-class SlideAnimation;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 //
 // TabRenderer
 //
 //  A View that renders a Tab, either in a TabStrip or in a DraggedTabView.
 //
 ///////////////////////////////////////////////////////////////////////////////
 class Tab : public BaseTab {
@@ skipping 108 matching lines @@
 
   // The current color of the close button.
   SkColor close_button_color_;
 
   static bool initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(Tab);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_