
PASS HTMLMediaElement.addTextTrack bogus first arg 
PASS HTMLMediaElement.addTextTrack uppercase first arg 
PASS HTMLMediaElement.addTextTrack subtitles first arg 
PASS HTMLMediaElement.addTextTrack captions first arg 
PASS HTMLMediaElement.addTextTrack descriptions first arg 
PASS HTMLMediaElement.addTextTrack chapters first arg 
PASS HTMLMediaElement.addTextTrack metadata first arg 
PASS HTMLMediaElement.addTextTrack undefined second and third arg 
PASS HTMLMediaElement.addTextTrack null second and third arg 
PASS HTMLMediaElement.addTextTrack foo and bar second and third arg 
PASS HTMLMediaElement.addTextTrack foo second arg, third arg omitted 

