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

Source/core/layout/LayoutFrameSet.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2006, 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.
  *
@@ skipping 16 matching lines @@
 
 namespace blink {
 
 class HTMLDimension;
 class HTMLFrameSetElement;
 class MouseEvent;
 
 enum FrameEdge { LeftFrameEdge, RightFrameEdge, TopFrameEdge, BottomFrameEdge };
 
 struct FrameEdgeInfo {
+    STACK_ALLOCATED();
     FrameEdgeInfo(bool preventResize = false, bool allowBorder = true)
         : m_preventResize(4)
         , m_allowBorder(4)
     {
         m_preventResize.fill(preventResize);
         m_allowBorder.fill(allowBorder);
     }
 
     bool preventResize(FrameEdge edge) const { return m_preventResize[edge]; }
     bool allowBorder(FrameEdge edge) const { return m_allowBorder[edge]; }
@@ skipping 25 matching lines @@
 
     bool userResize(MouseEvent*);
 
     bool canResizeRow(const IntPoint&) const;
     bool canResizeColumn(const IntPoint&) const;
 
     void notifyFrameEdgeInfoChanged();
     HTMLFrameSetElement* frameSet() const;
 
     class GridAxis {
+        DISALLOW_ALLOCATION();
         WTF_MAKE_NONCOPYABLE(GridAxis);
     public:
         GridAxis();
         void resize(int);
 
         Vector<int> m_sizes;
         Vector<int> m_deltas;
         Vector<bool> m_preventResize;
         Vector<bool> m_allowBorder;
         int m_splitBeingResized;
@@ skipping 39 matching lines @@
 
     bool m_isResizing;
     bool m_isChildResizing;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutFrameSet, isFrameSet());
 
 } // namespace blink
 
 #endif // LayoutFrameSet_h