Implement the MediaStreamTrackEvent constructor

third_party/WebKit/Source/modules/mediastream/MediaStreamTrackEvent.h

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 #ifndef MediaStreamTrackEvent_h
 #define MediaStreamTrackEvent_h
 
 #include "modules/EventModules.h"
+#include "modules/mediastream/MediaStreamTrackEventInit.h"
 #include "wtf/text/AtomicString.h"
 
 namespace blink {
 
 class MediaStreamTrack;
 
 class MediaStreamTrackEvent final : public Event {
     DEFINE_WRAPPERTYPEINFO();
 public:
     ~MediaStreamTrackEvent() override;
 
-    static MediaStreamTrackEvent* create(const AtomicString& type, bool canBubble, bool cancelable, MediaStreamTrack*);
+    static MediaStreamTrackEvent* create(const AtomicString& type, MediaStreamTrack*);
+    static MediaStreamTrackEvent* create(const AtomicString& type, const MediaStreamTrackEventInit&);
 
     MediaStreamTrack* track() const;
 
     // Event
     const AtomicString& interfaceName() const override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    MediaStreamTrackEvent(const AtomicString& type, bool canBubble, bool cancelable, MediaStreamTrack*);
+    MediaStreamTrackEvent(const AtomicString& type, MediaStreamTrack*);
+    MediaStreamTrackEvent(const AtomicString& type, const MediaStreamTrackEventInit&);
 
     Member<MediaStreamTrack> m_track;
 };
 
 } // namespace blink
 
 #endif // MediaStreamTrackEvent_h