Cleanup forward declared classes that are not needed.

chrome/views/button.h

 // Copyright (c) 2006-2008 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_VIEWS_BUTTON_H_
 #define CHROME_VIEWS_BUTTON_H_
 
 #include "chrome/views/base_button.h"
 #include "skia/include/SkBitmap.h"
 
 namespace views {
 
-class MouseEvent;
-
 ////////////////////////////////////////////////////////////////////////////////
 //
 // Button
 //
 // A simple button class
 //
 ////////////////////////////////////////////////////////////////////////////////
 class Button : public BaseButton {
  public:
   //
@@ skipping 50 matching lines @@
   // Images.
   SkBitmap images_[kButtonStateCount];
 
   // Alignment State.
   HorizontalAlignment h_alignment_;
   VerticalAlignment v_alignment_;
 
   // The tooltip text or empty string for none.
   std::wstring tooltip_text_;
 
-  DISALLOW_EVIL_CONSTRUCTORS(Button);
+  DISALLOW_COPY_AND_ASSIGN(Button);
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // ToggleButton
 //
 // A togglable button.  It swaps out its graphics when toggled.
 //
 ////////////////////////////////////////////////////////////////////////////////
 class ToggleButton : public Button {
@@ skipping 28 matching lines @@
   // The parent class's tooltip_text_ is displayed when not toggled, and
   // this one is shown when toggled.
   std::wstring toggled_tooltip_text_;
 
   DISALLOW_EVIL_CONSTRUCTORS(ToggleButton);
 };
 
 }  // namespace views
 
 #endif  // CHROME_VIEWS_BUTTON_H_
-