LayoutTests/media/track/captions-webvtt/tc027-empty-cue.vtt

WEBVTT
Empty cues should be discarded and ignored.

1
00:00:00.000 --> 00:00:30.500 align:start position:20%

2
00:00:31.000 --> 00:01:00.500 align:start position:20%

3
00:01:01.000 --> 00:02:00.500 align:start position:20%