Ensure proper finalization of garbage-collected types.

Source/core/css/Rect.h

 /*
  * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 10 matching lines @@
 #ifndef Rect_h
 #define Rect_h
 
 #include "core/css/CSSPrimitiveValue.h"
 #include "wtf/RefPtr.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace WebCore {
 
 class RectBase : public RefCountedWillBeGarbageCollected<RectBase> {
+    DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(RectBase);
 public:
     CSSPrimitiveValue* top() const { return m_top.get(); }
     CSSPrimitiveValue* right() const { return m_right.get(); }
     CSSPrimitiveValue* bottom() const { return m_bottom.get(); }
     CSSPrimitiveValue* left() const { return m_left.get(); }
 
     void setTop(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> top) { m_top = top; }
     void setRight(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> right) { m_right = right; }
     void setBottom(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> bottom) { m_bottom = bottom; }
     void setLeft(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> left) { m_left = left; }
 
     bool equals(const RectBase& other) const
     {
         return compareCSSValuePtr(m_top, other.m_top)
             && compareCSSValuePtr(m_right, other.m_right)
             && compareCSSValuePtr(m_left, other.m_left)
             && compareCSSValuePtr(m_bottom, other.m_bottom);
     }
 
     void trace(Visitor*);
 
-    ~RectBase() { }
-
 protected:
     RectBase() { }
     RectBase(const RectBase& cloneFrom)
         : m_top(cloneFrom.m_top ? cloneFrom.m_top->cloneForCSSOM() : nullptr)
         , m_right(cloneFrom.m_right ? cloneFrom.m_right->cloneForCSSOM() : nullptr)
         , m_bottom(cloneFrom.m_bottom ? cloneFrom.m_bottom->cloneForCSSOM() : nullptr)
         , m_left(cloneFrom.m_left ? cloneFrom.m_left->cloneForCSSOM() : nullptr)
     {
     }
 
@@ skipping 64 matching lines @@
     }
 
     // NOTE: If adding fields to this class please make the RectBase trace
     // method virtual and add a trace method in this subclass tracing the new
     // fields.
 };
 
 } // namespace WebCore
 
 #endif // Rect_h