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

Source/core/html/parser/AtomicHTMLToken.h

 /*
  * Copyright (C) 2013 Google, 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
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef AtomicHTMLToken_h
 #define AtomicHTMLToken_h
 
 #include "core/HTMLElementLookupTrie.h"
 #include "core/dom/Attribute.h"
 #include "core/html/parser/CompactHTMLToken.h"
 #include "core/html/parser/HTMLToken.h"
+#include "wtf/Allocator.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class AtomicHTMLToken {
+    STACK_ALLOCATED();
     WTF_MAKE_NONCOPYABLE(AtomicHTMLToken);
 public:
 
     bool forceQuirks() const
     {
         ASSERT(m_type == HTMLToken::DOCTYPE);
         return m_doctypeData->m_forceQuirks;
     }
 
     HTMLToken::Type type() const { return m_type; }
@@ skipping 193 matching lines @@
         const QualifiedName& name = nameForAttribute(attribute);
         // FIXME: This is N^2 for the number of attributes.
         if (!findAttributeInVector(m_attributes, name))
             m_attributes.append(Attribute(name, value));
     }
 }
 
 }
 
 #endif