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

Source/core/layout/LayoutState.h

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef LayoutState_h
 #define LayoutState_h
 
 #include "platform/geometry/LayoutRect.h"
+#include "wtf/Allocator.h"
 #include "wtf/HashMap.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 class ForceHorriblySlowRectMapping;
 class LayoutBox;
 class LayoutFlowThread;
 class LayoutObject;
 class LayoutView;
 
 class LayoutState {
+    DISALLOW_ALLOCATION();
     WTF_MAKE_NONCOPYABLE(LayoutState);
 public:
     // Constructor for root LayoutState created by LayoutView
     LayoutState(LayoutUnit pageLogicalHeight, bool pageLogicalHeightChanged, LayoutView&);
     // Constructor for sub-tree layout
     explicit LayoutState(LayoutObject& root);
 
     LayoutState(LayoutBox&, const LayoutSize& offset, LayoutUnit pageLogicalHeight = 0, bool pageHeightLogicalChanged = false, bool containingBlockLogicalWidthChanged = false);
 
     ~LayoutState();
@@ skipping 39 matching lines @@
     LayoutUnit m_pageLogicalHeight;
     // The offset of the start of the first page in the nearest enclosing pagination model.
     LayoutSize m_pageOffset;
 
     LayoutObject& m_layoutObject;
 };
 
 } // namespace blink
 
 #endif // LayoutState_h