Add SVGTests attrs to SVGSMILElement to support SVGDiscardElement

Source/core/svg/animation/SVGSMILElement.h

 /*
  * Copyright (C) 2008 Apple 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 10 matching lines @@
  * 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 SVGSMILElement_h
 #define SVGSMILElement_h
 
 #include "core/SVGNames.h"
 #include "core/svg/SVGElement.h"
+#include "core/svg/SVGTests.h"
 #include "core/svg/animation/SMILTime.h"
 #include "platform/heap/Heap.h"
 #include "wtf/HashMap.h"
 
 namespace blink {
 
 class ConditionEventListener;
 class SMILTimeContainer;
 class SVGSMILElement;
 
 template<typename T> class EventSender;
 typedef EventSender<SVGSMILElement> SMILEventSender;
 
 // This class implements SMIL interval timing model as needed for SVG animation.
-class SVGSMILElement : public SVGElement {
+class SVGSMILElement : public SVGElement, public SVGTests {
 public:
     SVGSMILElement(const QualifiedName&, Document&);
     virtual ~SVGSMILElement();
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
 
@@ skipping 222 matching lines @@
 {
     return element.hasTagName(SVGNames::setTag) || element.hasTagName(SVGNames::animateTag) || element.hasTagName(SVGNames::animateMotionTag)
         || element.hasTagName(SVGNames::animateTransformTag) || element.hasTagName((SVGNames::discardTag));
 }
 
 DEFINE_SVGELEMENT_TYPE_CASTS_WITH_FUNCTION(SVGSMILElement);
 
 }
 
 #endif // SVGSMILElement_h