Make classes and structures in core/xml, core/input, core/imagebitmap and core/Init fast-allocated.

Source/core/xml/DocumentXPathEvaluator.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 20 matching lines @@
 #include "core/xml/XPathNSResolver.h"
 
 namespace blink {
 
 class ExceptionState;
 class XPathExpression;
 class XPathResult;
 
 class DocumentXPathEvaluator final : public NoBaseWillBeGarbageCollected<DocumentXPathEvaluator>, public WillBeHeapSupplement<Document> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DocumentXPathEvaluator);
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(DocumentXPathEvaluator);
 public:
     static DocumentXPathEvaluator& from(WillBeHeapSupplementable<Document>&);
 
     static XPathExpression* createExpression(WillBeHeapSupplementable<Document>&,
         const String& expression, XPathNSResolver*, ExceptionState&);
     static XPathNSResolver* createNSResolver(WillBeHeapSupplementable<Document>&, Node* nodeResolver);
     static XPathResult* evaluate(WillBeHeapSupplementable<Document>&,
         const String& expression, Node* contextNode, XPathNSResolver*,
         unsigned short type, const ScriptValue&, ExceptionState&);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     DocumentXPathEvaluator();
 
     static const char* supplementName() { return "DocumentXPathEvaluator"; }
 
     PersistentWillBeMember<XPathEvaluator> m_xpathEvaluator;
 };
 
 } // namespace blink
 
 #endif // DocumentXPathEvaluator_h