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

Source/core/layout/line/InlineBox.h

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 297 matching lines @@
     DisplayItemClient displayItemClient() const { return toDisplayItemClient(this); }
 
 #define ADD_BOOLEAN_BITFIELD(name, Name) \
     private:\
     unsigned m_##name : 1;\
     public:\
     bool name() const { return m_##name; }\
     void set##Name(bool name) { m_##name = name; }\
 
     class InlineBoxBitfields {
+        DISALLOW_ALLOCATION();
     public:
         InlineBoxBitfields(bool firstLine = false, bool constructed = false, bool dirty = false, bool extracted = false, bool isHorizontal = true)
             : m_firstLine(firstLine)
             , m_constructed(constructed)
             , m_bidiEmbeddingLevel(0)
             , m_dirty(dirty)
             , m_extracted(extracted)
             , m_hasVirtualLogicalHeight(false)
             , m_isHorizontal(isHorizontal)
             , m_endsWithBreak(false)
@@ skipping 120 matching lines @@
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::InlineBox*);
 void showLineTree(const blink::InlineBox*);
 #endif
 
 #endif // InlineBox_h