Add UseCounter for TextTrackCue constructor

Source/core/html/track/TextTrackCue.h

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2012, 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 17 matching lines @@
  * (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 TextTrackCue_h
 #define TextTrackCue_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/events/EventTarget.h"
 #include "core/html/HTMLDivElement.h"
+#include "core/page/UseCounter.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class Document;
 class DocumentFragment;
 class ExceptionState;
 class ExecutionContext;
 class TextTrack;
 class TextTrackCue;
@@ skipping 20 matching lines @@
     TextTrackCue* m_cue;
 };
 
 // ----------------------------
 
 class TextTrackCue : public RefCounted<TextTrackCue>, public ScriptWrappable, public EventTargetWithInlineData {
     REFCOUNTED_EVENT_TARGET(TextTrackCue);
 public:
     static PassRefPtr<TextTrackCue> create(Document& document, double start, double end, const String& content)
     {
+        UseCounter::count(document, UseCounter::TextTrackCueConstructor);
         return adoptRef(new TextTrackCue(document, start, end, content));
     }
 
     static const AtomicString& cueShadowPseudoId()
     {
         DEFINE_STATIC_LOCAL(const AtomicString, cue, ("cue", AtomicString::ConstructFromLiteral));
         return cue;
     }
 
     virtual ~TextTrackCue();
@@ skipping 170 matching lines @@
     int m_displaySize;
 
     std::pair<float, float> m_displayPosition;
     String m_regionId;
     bool m_notifyRegion;
 };
 
 } // namespace WebCore
 
 #endif