addTextTrack     2272 Source/core/html/HTMLMediaElement.cpp void HTMLMediaElement::addTextTrack(TextTrack* track)
addTextTrack     2296 Source/core/html/HTMLMediaElement.cpp PassRefPtr<TextTrack> HTMLMediaElement::addTextTrack(const AtomicString& kind, const AtomicString& label, const AtomicString& language, ExceptionState& exceptionState)
addTextTrack      154 Source/web/WebMediaPlayerClientImpl.cpp void WebMediaPlayerClientImpl::addTextTrack(WebInbandTextTrack* textTrack)