Add UseCounter entry for SVGAnimationElement

Source/core/page/UseCounter.h

 /*
  * Copyright (C) 2012 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 63 matching lines @@
         LegacyTextNotifications,
         UnprefixedRequestAnimationFrame,
         PrefixedRequestAnimationFrame,
         ContentSecurityPolicy,
         ContentSecurityPolicyReportOnly,
         PrefixedContentSecurityPolicyReportOnly,
         PrefixedTransitionEndEvent,
         UnprefixedTransitionEndEvent,
         PrefixedAndUnprefixedTransitionEndEvent,
         AutoFocusAttribute,
-        UnusedSlot01, // Prior to 4/2013, we used this slot for AutoSaveAttribute.
+        SVGAnimationElement, // Prior to 4/2013, we used this slot for AutoSaveAttribute.
         DataListElement,
         FormAttribute,
         IncrementalAttribute,
         InputTypeColor,
         InputTypeDate,
         InputTypeDateTime,
         InputTypeDateTimeFallback,
         InputTypeDateTimeLocal,
         InputTypeEmail,
         InputTypeMonth,
@@ skipping 95 matching lines @@
 
     void updateMeasurements();
 
     OwnPtr<BitVector> m_countBits;
     BitVector m_CSSFeatureBits;
 };
 
 } // namespace WebCore
 
 #endif // UseCounter_h