Make classes and structures in core/layout fast-allocated.

Source/core/layout/LayoutView.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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 225 matching lines @@
     OwnPtrWillBePersistent<PendingSelection> m_pendingSelection;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutView, isLayoutView());
 
 // Suspends the PaintInvalidationState cached offset and clipRect optimization. Used under transforms
 // that cannot be represented by PaintInvalidationState (common in SVG) and when paint invalidation
 // containers don't follow the common tree-walk algorithm (e.g. when an absolute positioned descendant
 // is nested under a relatively positioned inline-block child).
 class ForceHorriblySlowRectMapping {
+    STACK_ALLOCATED();
     WTF_MAKE_NONCOPYABLE(ForceHorriblySlowRectMapping);
 public:
     ForceHorriblySlowRectMapping(const PaintInvalidationState* paintInvalidationState)
         : m_paintInvalidationState(paintInvalidationState)
         , m_didDisable(m_paintInvalidationState && m_paintInvalidationState->cachedOffsetsEnabled())
     {
         if (m_paintInvalidationState)
             m_paintInvalidationState->m_cachedOffsetsEnabled = false;
     }
 
     ~ForceHorriblySlowRectMapping()
     {
         if (m_didDisable)
             m_paintInvalidationState->m_cachedOffsetsEnabled = true;
     }
 private:
     const PaintInvalidationState* m_paintInvalidationState;
     bool m_didDisable;
 };
 
 } // namespace blink
 
 #endif // LayoutView_h