chrome: Cleanup class/struct forward declarations

chrome/browser/ui/views/find_bar_view.h

 // Copyright (c) 2012 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_FIND_BAR_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FIND_BAR_VIEW_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/ui/views/dropdown_bar_host_delegate.h"
 #include "ui/views/controls/button/vector_icon_button_delegate.h"
 #include "ui/views/controls/textfield/textfield_controller.h"
 #include "ui/views/view.h"
 #include "ui/views/view_targeter_delegate.h"
 
 class FindBarHost;
 class FindNotificationDetails;
 
 namespace gfx {
 class Range;
 }
 
 namespace views {
 class Label;
-class MouseEvent;
 class Painter;
 class Separator;
 class Textfield;
 class VectorIconButton;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // The FindBarView is responsible for drawing the UI controls of the
 // FindBar, the find text box, the 'Find' button and the 'Close'
@@ skipping 81 matching lines @@
   views::VectorIconButton* find_next_button_;
   views::VectorIconButton* close_button_;
 
   // The preferred height of the find bar.
   int preferred_height_;
 
   DISALLOW_COPY_AND_ASSIGN(FindBarView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FIND_BAR_VIEW_H_