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

Source/core/dom/custom/CustomElementException.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
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 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 CustomElementException_h
 #define CustomElementException_h
 
+#include "wtf/Allocator.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ExceptionState;
 
 class CustomElementException {
+    STATIC_ONLY(CustomElementException);
 public:
     enum Reason {
         CannotRegisterFromExtension,
         ConstructorPropertyNotConfigurable,
         ContextDestroyedCheckingPrototype,
         ContextDestroyedCreatingCallbacks,
         ContextDestroyedRegisteringDefinition,
         ExtendsIsInvalidName,
         ExtendsIsCustomElementName,
         InvalidName,
         PrototypeInUse,
         TypeAlreadyRegistered
     };
 
     static void throwException(Reason, const AtomicString& type, ExceptionState&);
 
 private:
-    CustomElementException();
-
     static String preamble(const AtomicString& type);
 };
 
 } // namespace blink
 
 #endif // CustomElementException_h