bindings: Adds virtual ScriptWrappable::wrap method.

Source/core/html/track/AudioTrack.h

Index: Source/core/html/track/AudioTrack.h
diff --git a/Source/core/html/track/AudioTrack.h b/Source/core/html/track/AudioTrack.h
index 48379418d97c87bafab25eb062b7892367a51a52..3112c2e96890e4373bf7043ffd347d04072e46d9 100644
--- a/Source/core/html/track/AudioTrack.h
+++ b/Source/core/html/track/AudioTrack.h
@@ -11,6 +11,7 @@
 namespace blink {
 
 class AudioTrack FINAL : public TrackBase, public ScriptWrappable {
+    DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<AudioTrack> create(const String& id, const AtomicString& kind, const AtomicString& label, const AtomicString& language, bool enabled)
     {
@@ -41,6 +42,6 @@ private:
 
 DEFINE_TRACK_TYPE_CASTS(AudioTrack, TrackBase::AudioTrack);
 
-}
+} // namespace blink
 
-#endif
+#endif // AudioTrack_h