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

Source/core/layout/line/LineBoxList.h

 /*
  * Copyright (C) 2009 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
@@ skipping 13 matching lines @@
  * 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 LineBoxList_h
 #define LineBoxList_h
 
 #include "core/layout/api/HitTestAction.h"
+#include "wtf/Allocator.h"
 #include "wtf/Assertions.h"
 
 namespace blink {
 
 class HitTestLocation;
 class HitTestResult;
 class InlineFlowBox;
 class LayoutBoxModelObject;
 class LayoutPoint;
 class LayoutRect;
 class LayoutUnit;
 class LineLayoutBoxModel;
 class LineLayoutItem;
 struct PaintInfo;
 
 class LineBoxList {
+    DISALLOW_ALLOCATION();
 public:
     LineBoxList()
         : m_firstLineBox(nullptr)
         , m_lastLineBox(nullptr)
     {
     }
 
 #if ENABLE(ASSERT)
     ~LineBoxList();
 #endif
@@ skipping 32 matching lines @@
 
 #if !ENABLE(ASSERT)
 inline void LineBoxList::checkConsistency() const
 {
 }
 #endif
 
 } // namespace blink
 
 #endif // LineBoxList_h