Make blink classes and structures in core/css fast-allocated

Source/core/css/parser/CSSParserString.h

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef CSSParserString_h
 #define CSSParserString_h
 
+#include "wtf/Allocator.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 struct CSSParserString {
+    STACK_ALLOCATED();
     void init(const LChar* characters, unsigned length)
     {
         m_data.characters8 = characters;
         m_length = length;
         m_is8Bit = true;
     }
 
     void init(const UChar* characters, unsigned length)
     {
         m_data.characters16 = characters;
@@ skipping 56 matching lines @@
         const UChar* characters16;
         const void* charactersRaw;
     } m_data;
     unsigned m_length;
     bool m_is8Bit;
 };
 
 }
 
 #endif